libavcodec/vp8dsp.c:73: error: Uninitialized Value
  The value read from tmp[_] was never initialized.

libavcodec/vp8dsp.c:73:9: 
71.         b1 = (tmp[i + 0] - tmp[i + 8]) * 23170;
72.         c1 = tmp[i + 4] * 12540 - tmp[i + 12] * 30274;
73.         d1 = tmp[i + 4] * 30274 + tmp[i + 12] * 12540;
            ^
74.         dc[i * 4 + 0] = 0;
75.         dc[i * 4 + 1] = 0;
