libavcodec/vorbis_dec.c:1592: error: Uninitialized Value
  The value read from res_chan[_] was never initialized.

libavcodec/vorbis_dec.c:1592:9: 
1590.         uint_fast16_t bs0 = vc->blocksize[0];
1591.         uint_fast16_t bs1 = vc->blocksize[1];
1592.         float *residue    = vc->channel_residues + res_chan[j] * blocksize / 2;
              ^
1593.         float *saved      = vc->saved + j * bs1 / 4;
1594.         float *ret        = vc->channel_floors + j * retlen;
