# HG changeset patch
# User Ruslan Ermilov <ru@nginx.com>
# Date 1501586913 -10800
# Node ID 2a288909abc634d2b4635de025f33f9c6bf39a91
# Parent  1b82e86dd3e71d96b27e3c72e93d04a1d2dab194
Variables: macros for null variables.

No functional changes.

diff --git a/src/http/modules/ngx_http_browser_module.c b/src/http/modules/ngx_http_browser_module.c
--- a/src/http/modules/ngx_http_browser_module.c
+++ b/src/http/modules/ngx_http_browser_module.c
@@ -222,7 +222,7 @@ static ngx_http_variable_t  ngx_http_bro
     { ngx_string("ancient_browser"), NULL, ngx_http_browser_variable,
       NGX_HTTP_ANCIENT_BROWSER, NGX_HTTP_VAR_CHANGEABLE, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -631,7 +631,7 @@ static ngx_http_variable_t  ngx_http_fas
       ngx_http_fastcgi_path_info_variable, 0,
       NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/modules/ngx_http_geoip_module.c b/src/http/modules/ngx_http_geoip_module.c
--- a/src/http/modules/ngx_http_geoip_module.c
+++ b/src/http/modules/ngx_http_geoip_module.c
@@ -232,7 +232,7 @@ static ngx_http_variable_t  ngx_http_geo
       ngx_http_geoip_city_int_variable,
       offsetof(GeoIPRecord, area_code), 0, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -829,7 +829,7 @@ static ngx_http_variable_t  ngx_http_pro
       ngx_http_proxy_internal_chunked_variable, 0,
       NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/modules/ngx_http_realip_module.c b/src/http/modules/ngx_http_realip_module.c
--- a/src/http/modules/ngx_http_realip_module.c
+++ b/src/http/modules/ngx_http_realip_module.c
@@ -122,7 +122,7 @@ static ngx_http_variable_t  ngx_http_rea
     { ngx_string("realip_remote_port"), NULL,
       ngx_http_realip_remote_port_variable, 0, 0, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/modules/ngx_http_ssi_filter_module.c b/src/http/modules/ngx_http_ssi_filter_module.c
--- a/src/http/modules/ngx_http_ssi_filter_module.c
+++ b/src/http/modules/ngx_http_ssi_filter_module.c
@@ -321,7 +321,7 @@ static ngx_http_variable_t  ngx_http_ssi
     { ngx_string("date_gmt"), NULL, ngx_http_ssi_date_gmt_local_variable, 1,
       NGX_HTTP_VAR_NOCACHEABLE, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/modules/ngx_http_ssl_module.c b/src/http/modules/ngx_http_ssl_module.c
--- a/src/http/modules/ngx_http_ssl_module.c
+++ b/src/http/modules/ngx_http_ssl_module.c
@@ -329,7 +329,7 @@ static ngx_http_variable_t  ngx_http_ssl
     { ngx_string("ssl_client_v_remain"), NULL, ngx_http_ssl_variable,
       (uintptr_t) ngx_ssl_get_client_v_remain, NGX_HTTP_VAR_CHANGEABLE, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/modules/ngx_http_stub_status_module.c b/src/http/modules/ngx_http_stub_status_module.c
--- a/src/http/modules/ngx_http_stub_status_module.c
+++ b/src/http/modules/ngx_http_stub_status_module.c
@@ -76,7 +76,7 @@ static ngx_http_variable_t  ngx_http_stu
     { ngx_string("connections_waiting"), NULL, ngx_http_stub_status_variable,
       3, NGX_HTTP_VAR_NOCACHEABLE, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -427,7 +427,7 @@ static ngx_http_variable_t  ngx_http_ups
     { ngx_string("upstream_cookie_"), NULL, ngx_http_upstream_cookie_variable,
       0, NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_PREFIX, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/ngx_http_variables.c b/src/http/ngx_http_variables.c
--- a/src/http/ngx_http_variables.c
+++ b/src/http/ngx_http_variables.c
@@ -376,7 +376,7 @@ static ngx_http_variable_t  ngx_http_cor
     { ngx_string("arg_"), NULL, ngx_http_variable_argument,
       0, NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_PREFIX, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/http/ngx_http_variables.h b/src/http/ngx_http_variables.h
--- a/src/http/ngx_http_variables.h
+++ b/src/http/ngx_http_variables.h
@@ -43,6 +43,8 @@ struct ngx_http_variable_s {
     ngx_uint_t                    index;
 };
 
+#define ngx_http_null_variable  { ngx_null_string, NULL, NULL, 0, 0, 0 }
+
 
 ngx_http_variable_t *ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name,
     ngx_uint_t flags);
diff --git a/src/http/v2/ngx_http_v2_module.c b/src/http/v2/ngx_http_v2_module.c
--- a/src/http/v2/ngx_http_v2_module.c
+++ b/src/http/v2/ngx_http_v2_module.c
@@ -225,7 +225,7 @@ static ngx_http_variable_t  ngx_http_v2_
     { ngx_string("http2"), NULL,
       ngx_http_v2_variable, 0, 0, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_http_null_variable
 };
 
 
diff --git a/src/stream/ngx_stream_geoip_module.c b/src/stream/ngx_stream_geoip_module.c
--- a/src/stream/ngx_stream_geoip_module.c
+++ b/src/stream/ngx_stream_geoip_module.c
@@ -210,7 +210,7 @@ static ngx_stream_variable_t  ngx_stream
       ngx_stream_geoip_city_int_variable,
       offsetof(GeoIPRecord, area_code), 0, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_stream_null_variable
 };
 
 
diff --git a/src/stream/ngx_stream_realip_module.c b/src/stream/ngx_stream_realip_module.c
--- a/src/stream/ngx_stream_realip_module.c
+++ b/src/stream/ngx_stream_realip_module.c
@@ -89,7 +89,7 @@ static ngx_stream_variable_t  ngx_stream
     { ngx_string("realip_remote_port"), NULL,
       ngx_stream_realip_remote_port_variable, 0, 0, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_stream_null_variable
 };
 
 
diff --git a/src/stream/ngx_stream_ssl_module.c b/src/stream/ngx_stream_ssl_module.c
--- a/src/stream/ngx_stream_ssl_module.c
+++ b/src/stream/ngx_stream_ssl_module.c
@@ -273,7 +273,7 @@ static ngx_stream_variable_t  ngx_stream
     { ngx_string("ssl_client_v_remain"), NULL, ngx_stream_ssl_variable,
       (uintptr_t) ngx_ssl_get_client_v_remain, NGX_STREAM_VAR_CHANGEABLE, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_stream_null_variable
 };
 
 
diff --git a/src/stream/ngx_stream_ssl_preread_module.c b/src/stream/ngx_stream_ssl_preread_module.c
--- a/src/stream/ngx_stream_ssl_preread_module.c
+++ b/src/stream/ngx_stream_ssl_preread_module.c
@@ -85,7 +85,7 @@ static ngx_stream_variable_t  ngx_stream
     { ngx_string("ssl_preread_server_name"), NULL,
       ngx_stream_ssl_preread_server_name_variable, 0, 0, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_stream_null_variable
 };
 
 
diff --git a/src/stream/ngx_stream_upstream.c b/src/stream/ngx_stream_upstream.c
--- a/src/stream/ngx_stream_upstream.c
+++ b/src/stream/ngx_stream_upstream.c
@@ -100,7 +100,7 @@ static ngx_stream_variable_t  ngx_stream
       ngx_stream_upstream_bytes_variable, 1,
       NGX_STREAM_VAR_NOCACHEABLE, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_stream_null_variable
 };
 
 
diff --git a/src/stream/ngx_stream_variables.c b/src/stream/ngx_stream_variables.c
--- a/src/stream/ngx_stream_variables.c
+++ b/src/stream/ngx_stream_variables.c
@@ -111,7 +111,7 @@ static ngx_stream_variable_t  ngx_stream
     { ngx_string("protocol"), NULL,
       ngx_stream_variable_protocol, 0, 0, 0 },
 
-    { ngx_null_string, NULL, NULL, 0, 0, 0 }
+      ngx_stream_null_variable
 };
 
 
diff --git a/src/stream/ngx_stream_variables.h b/src/stream/ngx_stream_variables.h
--- a/src/stream/ngx_stream_variables.h
+++ b/src/stream/ngx_stream_variables.h
@@ -43,6 +43,8 @@ struct ngx_stream_variable_s {
     ngx_uint_t                    index;
 };
 
+#define ngx_stream_null_variable  { ngx_null_string, NULL, NULL, 0, 0, 0 }
+
 
 ngx_stream_variable_t *ngx_stream_add_variable(ngx_conf_t *cf, ngx_str_t *name,
     ngx_uint_t flags);