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wtvdec: fix null pointer dereference 

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-12-02 22:36:15 +01:00
parent 80aa89bdff
commit ec79b1fc88
1 changed files with 1 additions and 1 deletions
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2
libavformat/wtvdec.c
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@ -763,7 +763,7 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
}
} else if (!ff_guidcmp(g, ff_stream2_guid)) {
int stream_index = ff_find_stream_index(s, sid);
if (stream_index >= 0 && !((WtvStream*)s->streams[stream_index]->priv_data)->seen_data) {
if (stream_index >= 0 && s->streams[stream_index]->priv_data && !((WtvStream*)s->streams[stream_index]->priv_data)->seen_data) {
ff_asf_guid mediatype, subtype, formattype;
int size;
avio_skip(pb, 12);