libavcodec/vp56.c:181: error: Uninitialized Value
  The value read from type[_] was never initialized.

libavcodec/vp56.c:181:13: 
179.                 s->parse_vector_adjustment(s, &s->mv[b]);
180.                 break;
181.             case VP56_MB_INTER_V1_PF:
                 ^
182.                 s->mv[b] = s->vector_candidate[0];
183.                 break;
