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indeo4: check band->scan

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Fixes null ptr exception

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-03-23 04:18:10 +01:00
parent f927c5b753
commit c0a99eae29
1 changed files with 5 additions and 0 deletions
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5
libavcodec/indeo4.c
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@ -444,6 +444,11 @@ static int decode_band_hdr(IVI4DecContext *ctx, IVIBandDesc *band,
align_get_bits(&ctx->gb);
if (!band->scan) {
av_log(avctx, AV_LOG_ERROR, "band->scan not set\n");
return AVERROR_INVALIDDATA;
}
return 0;
}