libavcodec/h264.c:1099: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264.c:1099:13: 
1097. 
1098.             fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, (uint8_t)ref[0], 1);
1099.             fill_rectangle(&h->ref_cache[1][scan8[0]], 4, 4, 8, (uint8_t)ref[1], 1);
                  ^
1100.             if(!IS_INTRA(mb_type_col)
1101.                && (   (l1ref0[0] == 0 && FFABS(l1mv0[0][0]) <= 1 && FFABS(l1mv0[0][1]) <= 1)
