From 3559fb97c459c88b4f1d0eef80d55933d3b7fabe Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Storsj=C3=B6?= <martin@martin.st>
Date: Mon, 26 Aug 2013 10:56:17 +0300
Subject: [PATCH] movenc: Check that tracks->enc exists before trying to free
 extradata
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Signed-off-by: Martin Storsjö <martin@martin.st>
---
 libavformat/movenc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libavformat/movenc.c b/libavformat/movenc.c
index dc13a4be0ee..cebdca98609 100644
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@@ -3470,7 +3470,8 @@ static int mov_write_trailer(AVFormatContext *s)
     }
 
     if (mov->chapter_track) {
-        av_free(mov->tracks[mov->chapter_track].enc->extradata);
+        if (mov->tracks[mov->chapter_track].enc)
+            av_free(mov->tracks[mov->chapter_track].enc->extradata);
         av_freep(&mov->tracks[mov->chapter_track].enc);
     }
 
-- 
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