more tolerance for dc=0

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@2716 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/h263.c

@@ -4432,6 +4432,7 @@ static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
             level = get_bits(&s->gb, 8);
             if((level&0x7F) == 0){
                 av_log(s->avctx, AV_LOG_ERROR, "illegal dc %d at %d %d\n", level, s->mb_x, s->mb_y);
+                if(s->error_resilience >= FF_ER_COMPLIANT)
                     return -1;
             }
             if (level == 255)