libavcodec/wmavoice.c:1530: error: Uninitialized Value
  The value read from last_block_pitch was never initialized.

libavcodec/wmavoice.c:1530:17: 
1528.                 block_pitch = bitstream_read(bc, s->block_pitch_nbits);
1529.             } else
1530.                 block_pitch = last_block_pitch - s->block_delta_pitch_hrange +
                      ^
1531.                               bitstream_read(bc, s->block_delta_pitch_nbits);
1532.             /* Convert last_ so that any next delta is within _range */
