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avformat/smacker: Check if bufs has been allocated before use 

Fixes null pointer dereference

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-19 14:20:21 +02:00
parent 93648ee47b
commit 8be56e464b
1 changed files with 1 additions and 1 deletions
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2
libavformat/smacker.c
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@ -351,7 +351,7 @@ static int smacker_read_packet(AVFormatContext *s, AVPacket *pkt)
smk->cur_frame++;
smk->nextpos = avio_tell(s->pb);
} else {
if (smk->stream_id[smk->curstream] < 0)
if (smk->stream_id[smk->curstream] < 0 || !smk->bufs[smk->curstream])
return AVERROR_INVALIDDATA;
if (av_new_packet(pkt, smk->buf_sizes[smk->curstream]))
return AVERROR(ENOMEM);