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avutil/frame: fix crash with av_frame_unref(NULL) 

Fixes: af94b3a3d26586c08f557cafe8246251_signal_sigsegv_7ffff713351a_343_XFMode.ASF with 2097152 alloc limit

Found-by: Samuel Groß, Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2015-07-13 19:25:03 +02:00
parent cc0380222a
commit feb6a94f74
1 changed files with 3 additions and 0 deletions
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3
libavutil/frame.c
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@ -463,6 +463,9 @@ void av_frame_unref(AVFrame *frame)
{
int i;
if (!frame)
return;
wipe_side_data(frame);
for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)