libavcodec/vp8dsp.c:166: error: Uninitialized Value
  The value read from p2 was never initialized.

libavcodec/vp8dsp.c:166:33: 
164.     LOAD_PIXELS
165.     return simple_limit(p, stride, E)
166.         && FFABS(p3-p2) <= I && FFABS(p2-p1) <= I && FFABS(p1-p0) <= I
                                     ^
167.         && FFABS(q3-q2) <= I && FFABS(q2-q1) <= I && FFABS(q1-q0) <= I;
168. }
