libavcodec/vp56.c:184: error: Uninitialized Value
  The value read from type[_] was never initialized.

libavcodec/vp56.c:184:13: 
182.                 s->mv[b] = s->vector_candidate[0];
183.                 break;
184.             case VP56_MB_INTER_V2_PF:
                 ^
185.                 s->mv[b] = s->vector_candidate[1];
186.                 break;
