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demux_mkv: fix undefined behavior

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With some files, the extradata variable can remain uninitialized, but
will be used for memory access.

CC: @mpv-player/stable (with high priority)
This commit is contained in:
wm4 2014-10-13 16:42:00 +02:00
parent ceba1d446a
commit 057384baa6
1 changed files with 1 additions and 1 deletions
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2
demux/demux_mkv.c
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@ -1149,7 +1149,7 @@ static const videocodec_info_t vinfo[] = {
static int demux_mkv_open_video(demuxer_t *demuxer, mkv_track_t *track)
{
unsigned char *extradata;
unsigned char *extradata = NULL;
unsigned int extradata_size = 0;
bool raw = false;
struct sh_stream *sh = new_sh_stream(demuxer, STREAM_VIDEO);