Allow resetting connections closed by "return 444" (ticket #905).

If reset_timedout_connection is on, TCP connections closed by
"return 444" will be reset instead of a normal close.

src/http/ngx_http_request.c

diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 0432c91..f302e56 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -2353,6 +2353,7 @@
         || rc == NGX_HTTP_NO_CONTENT)
     {
         if (rc == NGX_HTTP_CLOSE) {
+            c->timedout = 1;
             ngx_http_terminate_request(r, rc);
             return;
         }