h264: accept rbsp_trailing longer than 1 byte
Originally committed as revision 5467 to svn://svn.ffmpeg.org/ffmpeg/trunk
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				@ -7973,7 +7973,8 @@ static int decode_nal_units(H264Context *h, uint8_t *buf, int buf_size){
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      }
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        ptr= decode_nal(h, buf + buf_index, &dst_length, &consumed, h->is_avc ? nalsize : buf_size - buf_index);
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        if(ptr[dst_length - 1] == 0) dst_length--;
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        while(ptr[dst_length - 1] == 0 && dst_length > 1)
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            dst_length--;
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        bit_length= 8*dst_length - decode_rbsp_trailing(ptr + dst_length - 1);
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        if(s->avctx->debug&FF_DEBUG_STARTCODE){
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