libavcodec/ac3enc.c:753: error: Uninitialized Value
  The value read from first_cpl_coords[_] was never initialized.

libavcodec/ac3enc.c:753:25: 
751.             for (ch = 1; ch <= s->fbw_channels; ch++) {
752.                 if (block->channel_in_cpl[ch]) {
753.                     if (first_cpl_coords[ch]) {
                             ^
754.                         block->new_cpl_coords = 2;
755.                         first_cpl_coords[ch]  = 0;
