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avcodec/mpegvideo: fix null pointer dereference

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Fixes: 111342.ogm with ffplay
Found-by: Dale Curtis <dalecurtis@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-04-29 14:50:46 +02:00
parent 5b881499a8
commit 6a0b5e3476
1 changed files with 1 additions and 1 deletions
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2
libavcodec/mpegvideo.c
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@ -931,7 +931,7 @@ int ff_mpeg_update_thread_context(AVCodecContext *dst,
#define UPDATE_PICTURE(pic)\
do {\
ff_mpeg_unref_picture(s, &s->pic);\
if (s1->pic.f->buf[0])\
if (s1->pic.f && s1->pic.f->buf[0])\
ret = ff_mpeg_ref_picture(s, &s->pic, &s1->pic);\
else\
ret = update_picture_tables(&s->pic, &s1->pic);\