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wav: init st to NULL to avoid a false-positive warning.

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If st is NULL, it means no 'fmt ' tag is found, but 'data' tag (which
needs a previous 'fmt ' tag to be parsed correctly and st initialized)
check will make sure st is never dereferenced in that case.

Fixes warning:
    libavformat/wav.c: In function ‘wav_read_header’:
    libavformat/wav.c:499:44: warning: ‘st’ may be used uninitialized in this function [-Wmaybe-uninitialized]

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Clément Bœsch 2011-09-01 20:06:05 +02:00 committed by Derek Buitenhuis
parent 37c6ad2345
commit 61884b9d1b
1 changed files with 1 additions and 1 deletions
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libavformat/wav.c
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@ -387,7 +387,7 @@ static int wav_read_header(AVFormatContext *s)
int rf64;
uint32_t tag, list_type;
AVIOContext *pb = s->pb;
AVStream *st;
AVStream *st = NULL;
WAVContext *wav = s->priv_data;
int ret, got_fmt = 0;
int64_t next_tag_ofs, data_ofs = -1;