libavcodec/vp9dsp.c:1623: error: Uninitialized Value
  The value read from q5 was never initialized.

libavcodec/vp9dsp.c:1623:13: 
1621.             dst[strideb * +3] = (p3 + p2 + p1 + p0 + q0 + q1 + q2 + q3 * 2 +
1622.                                  q4 + q5 + q6 + q7 + q7 + q7 + q7 + 8) >> 4;
1623.             dst[strideb * +4] = (p2 + p1 + p0 + q0 + q1 + q2 + q3 + q4 * 2 +
                  ^
1624.                                  q5 + q6 + q7 + q7 + q7 + q7 + q7 + 8) >> 4;
1625.             dst[strideb * +5] = (p1 + p0 + q0 + q1 + q2 + q3 + q4 + q5 * 2 +
