libavformat/rtpdec_vp8.c:149: error: Uninitialized Value
  The value read from pictureid_mask was never initialized.

libavformat/rtpdec_vp8.c:149:21: 
147.                 return AVERROR(EAGAIN);
148.             if (pictureid >= 0) {
149.                 if (pictureid != ((vp8->prev_pictureid + 1) & pictureid_mask)) {
                         ^
150.                     return vp8_broken_sequence(ctx, vp8,
151.                                                "Missed a picture, sequence broken\n");
