libavcodec/vp8.c:1487: error: Uninitialized Value
  The value read from curframe was never initialized.

libavcodec/vp8.c:1487:5: 
1485.     int ret, mb_x, mb_y, i, y, referenced;
1486.     enum AVDiscard skip_thresh;
1487.     AVFrame *av_uninit(curframe), *prev_frame = s->framep[VP56_FRAME_CURRENT];
          ^
1488. 
1489.     if ((ret = decode_frame_header(s, avpkt->data, avpkt->size)) < 0)
