libavcodec/vp8dsp.c:209: error: Uninitialized Value
  The value read from p2 was never initialized.

libavcodec/vp8dsp.c:209:12: 
207.     LOAD_PIXELS
208.     return simple_limit(p, stride, E) &&
209.            FFABS(p3 - p2) <= I &&
                ^
210.            FFABS(p2 - p1) <= I &&
211.            FFABS(p1 - p0) <= I &&
