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

@@ -2353,6 +2353,7 @@ ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
         || rc == NGX_HTTP_NO_CONTENT)
     {
         if (rc == NGX_HTTP_CLOSE) {
+            c->timedout = 1;
             ngx_http_terminate_request(r, rc);
             return;
         }