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-rw-r--r--libavformat/xwma.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/libavformat/xwma.c b/libavformat/xwma.c
index 075a85a2e7..a1f2dc224a 100644
--- a/libavformat/xwma.c
+++ b/libavformat/xwma.c
@@ -104,11 +104,10 @@ static int xwma_read_header(AVFormatContext *s)
avpriv_request_sample(s, "Unexpected extradata (%d bytes)",
st->codec->extradata_size);
} else {
- st->codec->extradata_size = 6;
- st->codec->extradata = av_mallocz(6 + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!st->codec->extradata)
+ if (ff_alloc_extradata(st->codec, 6))
return AVERROR(ENOMEM);
+ memset(st->codec->extradata, 0, st->codec->extradata_size);
/* setup extradata with our experimentally obtained value */
st->codec->extradata[4] = 31;
}