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bink: check vst->index_entries before using it 

This fixes a NULL pointer dereference if vst->duration is 0.

The problem was introduced in commit 0588acaf.

Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 86d00ede4f)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Andreas Cadhalpun 2015-04-22 17:08:51 +02:00 committed by Michael Niedermayer
parent 5ae8df8d37
commit 004064912f
1 changed files with 4 additions and 1 deletions
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5
libavformat/bink.c
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@ -194,7 +194,10 @@ static int read_header(AVFormatContext *s)
return ret;
}
avio_seek(pb, vst->index_entries[0].pos, SEEK_SET);
if (vst->index_entries)
avio_seek(pb, vst->index_entries[0].pos, SEEK_SET);
else
avio_skip(pb, 4);
bink->current_track = -1;
return 0;