libavcodec/qdm2.c:952: error: Uninitialized Value
  The value read from samples[_] was never initialized.

libavcodec/qdm2.c:952:37: 
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.                     }
954.                     for (chs = 0; chs < q->nb_channels; chs++)
