libavcodec/vp8.c:1557: error: Uninitialized Value
  The value read from curframe was never initialized.

libavcodec/vp8.c:1557:5: 
1555.     int ret, mb_x, mb_y, i, y, referenced;
1556.     enum AVDiscard skip_thresh;
1557.     AVFrame *av_uninit(curframe), *prev_frame = s->framep[VP56_FRAME_CURRENT];
          ^
1558. 
1559.     release_queued_segmaps(s, 0);
