From 3e013bf3529522da5f58c9a3414353685dfcab8e Mon Sep 17 00:00:00 2001
From: Andy Green <andy@warmcat.com>
Date: Sat, 5 Oct 2019 11:15:14 +0100
Subject: [PATCH] cgi: check for stdout failed or gone away

---
 lib/core-net/dummy-callback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/core-net/dummy-callback.c b/lib/core-net/dummy-callback.c
index bf227eb05..a6932dd2c 100644
--- a/lib/core-net/dummy-callback.c
+++ b/lib/core-net/dummy-callback.c
@@ -315,7 +315,7 @@ lws_callback_http_dummy(struct lws *wsi, enum lws_callback_reasons reason,
 				lwsl_debug("AUX_BF__CGI forcing close\n");
 				return -1;
 			}
-			if (!n)
+			if (!n && wsi->http.cgi && wsi->http.cgi->stdwsi[LWS_STDOUT])
 				lws_rx_flow_control(
 					wsi->http.cgi->stdwsi[LWS_STDOUT], 1);