libavcodec/vp8dsp.c:212: error: Uninitialized Value
  The value read from q2 was never initialized.

libavcodec/vp8dsp.c:212:12: 
210.            FFABS(p2 - p1) <= I &&
211.            FFABS(p1 - p0) <= I &&
212.            FFABS(q3 - q2) <= I &&
                ^
213.            FFABS(q2 - q1) <= I &&
214.            FFABS(q1 - q0) <= I;
