From 460f74495fa93c4bb85503c5443580e2bb857efa Mon Sep 17 00:00:00 2001
From: Ross Nicholson <phunkyfish@gmail.com>
Date: Thu, 19 Sep 2019 16:12:33 +0100
Subject: [PATCH] libavformat/rtsp: return error if rtsp_hd_out is null instead
 of crash

Signed-off-by: Aman Gupta <aman@tmm1.net>
---
 libavformat/rtsp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index c153cac88b..859defa592 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -1318,6 +1318,9 @@ static int rtsp_send_cmd_with_content_async(AVFormatContext *s,
     char buf[4096], *out_buf;
     char base64buf[AV_BASE64_SIZE(sizeof(buf))];
 
+    if (!rt->rtsp_hd_out)
+        return ENOTCONN;
+
     /* Add in RTSP headers */
     out_buf = buf;
     rt->seq++;