libavcodec/vp56.c:178: error: Uninitialized Value
  The value read from type[_] was never initialized.

libavcodec/vp56.c:178:13: 
176.                 s->mv[b] = (VP56mv) {0,0};
177.                 break;
178.             case VP56_MB_INTER_DELTA_PF:
                 ^
179.                 s->parse_vector_adjustment(s, &s->mv[b]);
180.                 break;
