libavcodec/qdm2.c:979: error: Uninitialized Value
  The value read from samples[_] was never initialized.

libavcodec/qdm2.c:979:33: 
977.                                     q->tone_level[1][sb][(j + k) / 2] * -samples[k];
978.                             else
979.                                 q->sb_samples[1][j + k][sb] =
                                     ^
980.                                     q->tone_level[1][sb][(j + k) / 2] * samples[k];
981.                         }
