libavcodec/qdm2.c:951: error: Uninitialized Value
  The value read from samples[_] was never initialized.

libavcodec/qdm2.c:951:25: 
949. 
950.                     for (k = 0; k < run; k++) {
951.                         tmp[k][0] = samples[k];
                             ^
952.                         tmp[k][1] = (sign_bits[(j + k) / 8]) ? -samples[k] : samples[k];
953.                     }
