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avformat/oggenc: check for stream private data in ogg_free()

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Fixes a NULL pointer derefence when ogg_init() returns a failure and
a stream's private data was not yet allocated.

This is a regression since 3c5a53cdfa099bba8bd951f95b85727b4b3b5d68

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2017-06-22 15:51:28 -03:00
parent 067e42b851
commit 505cb8e390
1 changed files with 2 additions and 0 deletions
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2
libavformat/oggenc.c
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@ -743,6 +743,8 @@ static void ogg_free(AVFormatContext *s)
for (i = 0; i < s->nb_streams; i++) {
AVStream *st = s->streams[i];
OGGStreamContext *oggstream = st->priv_data;
if (!oggstream)
continue;
if (st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
st->codecpar->codec_id == AV_CODEC_ID_SPEEX ||
st->codecpar->codec_id == AV_CODEC_ID_OPUS ||