libavcodec/h264.c:1126: error: Uninitialized Value
  The value read from ref[_] was never initialized.

libavcodec/h264.c:1126:17: 
1124.                 fill_rectangle(&h->mv_cache[1][scan8[i8*4]], 2, 2, 8, pack16to32(mv[1][0],mv[1][1]), 4);
1125.                 fill_rectangle(&h->ref_cache[0][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[0], 1);
1126.                 fill_rectangle(&h->ref_cache[1][scan8[i8*4]], 2, 2, 8, (uint8_t)ref[1], 1);
                      ^
1127. 
1128.                 /* col_zero_flag */
