From 3588e6b7c5327eb0831d1b0fc4baf2ce96566b98 Mon Sep 17 00:00:00 2001
From: Reinhard Tartler <siretart@tauware.de>
Date: Fri, 21 May 2010 20:22:18 +0000
Subject: [PATCH] Fix a crash when opening WMS RTSP streams Fixes issue 1948

backport r23181 by mstorsjo


Originally committed as revision 23228 to svn://svn.ffmpeg.org/ffmpeg/branches/0.6
---
 libavformat/rtsp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index fec91f11b8..6dbd796d31 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -1337,6 +1337,8 @@ static int rtsp_read_play(AVFormatContext *s)
                 RTSPStream *rtsp_st = rt->rtsp_streams[i];
                 RTPDemuxContext *rtpctx = rtsp_st->transport_priv;
                 AVStream *st = NULL;
+                if (!rtpctx)
+                    continue;
                 if (rtsp_st->stream_index >= 0)
                     st = s->streams[rtsp_st->stream_index];
                 rtpctx->last_rtcp_ntp_time  = AV_NOPTS_VALUE;