Fix crash decoding broken wmv2 files.
Fixes issue 1670. Patch by Daniel Kang, daniel.d.kang at gmail Originally committed as revision 26202 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -87,7 +87,7 @@ static int decode_ext_header(Wmv2Context *w){
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if(s->avctx->extradata_size<4) return -1;
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if(s->avctx->extradata_size<4) return -1;
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init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8);
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init_get_bits(&gb, s->avctx->extradata, 32);
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fps = get_bits(&gb, 5);
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fps = get_bits(&gb, 5);
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s->bit_rate = get_bits(&gb, 11)*1024;
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s->bit_rate = get_bits(&gb, 11)*1024;
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