Event pipe: fixed writing cache header to a temp file. With previous code the p->temp_file->offset wasn't adjusted if a temp file was written by the code in ngx_event_pipe_write_to_downstream() after an EOF, resulting in cache not being used with empty scgi and uwsgi responses with Content-Length set to 0. Fix it to call ngx_event_pipe_write_chain_to_temp_file() there instead of calling ngx_write_chain_to_temp_file() directly.

ngx_addon_name=ngx_mysql

HTTP_MODULES="$HTTP_MODULES ngx_http_mysql_test_module"

HTTP_INCS="$HTTP_INCS $ngx_addon_dir"
HTTP_DEPS="$HTTP_DEPS $ngx_addon_dir/ngx_mysql.h"
#CORE_LIBS="$CORE_LIBS -lmd"

USE_SHA1=YES

NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_mysql.c"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_mysql_test.c"