add code missed in r1856

src/http/ngx_http_request.c

diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 03dc68b..4d21a00 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -484,6 +484,10 @@
             ngx_add_timer(rev, c->listening->post_accept_timeout);
         }
 
+        if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
+            ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
+        }
+
         return;
     }