libavcodec/vorbisdec.c:1604: error: Uninitialized Value
  The value read from res_chan[_] was never initialized.

libavcodec/vorbisdec.c:1604:9: 
1602. 
1603.     for (j = vc->audio_channels-1;j >= 0; j--) {
1604.         ch_res_ptr   = vc->channel_residues + res_chan[j] * blocksize / 2;
              ^
1605.         vc->fdsp.vector_fmul(floor_ptr[j], floor_ptr[j], ch_res_ptr, blocksize / 2);
1606.         mdct->imdct_half(mdct, ch_res_ptr, floor_ptr[j]);
