avformat/argo_asf: Use 64bit in offset intermediate
Fixes: CID1467435 Unintentional integer overflow Sponsored-by: Sovereign Tech Fund Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -259,7 +259,7 @@ static int argo_asf_seek(AVFormatContext *s, int stream_index,
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return -1;
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offset = asf->fhdr.chunk_offset + ASF_CHUNK_HEADER_SIZE +
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(block * st->codecpar->block_align);
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block * (int64_t)st->codecpar->block_align;
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if ((offset = avio_seek(s->pb, offset, SEEK_SET)) < 0)
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return offset;
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