nginx 0.3.46 *) Feature: the "proxy_hide_header", "proxy_pass_header", "fastcgi_hide_header", and "fastcgi_pass_header" directives. *) Change: the "proxy_pass_x_powered_by", "fastcgi_x_powered_by", and "proxy_pass_server" directives were canceled. *) Feature: the "X-Accel-Buffering" response header line is supported in proxy mode. *) Bugfix: the reconfiguration bug and memory leaks in the ngx_http_perl_module.

--- a/src/http/ngx_http_core_module.h
+++ b/src/http/ngx_http_core_module.h
@@ -72,7 +72,7 @@ typedef struct {
 
     ngx_http_phase_t           phases[NGX_HTTP_LOG_PHASE + 1];
 
-    ngx_hash0_t                headers_in_hash;
+    ngx_hash_t                 headers_in_hash;
 
     ngx_hash_t                 variables_hash;