From 2c160320280a80362507eb4ce5fe20dd399be93e Mon Sep 17 00:00:00 2001
From: Michael Niedermayer
Date: Wed, 24 Jan 2007 00:54:36 +0000
Subject: maybe fix segfault with missing extradata (unchecked)

Originally committed as revision 7677 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/svq3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libavcodec')

diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index c852832f66..8c08409e95 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -826,7 +826,7 @@ static int svq3_decode_frame (AVCodecContext *avctx,
     }
 
     /* if a match was found, parse the extra data */
-    if (!memcmp (extradata, "SEQH", 4)) {
+    if (extradata && !memcmp (extradata, "SEQH", 4)) {
 
       GetBitContext gb;
 
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