libavcodec/alac.c:553: error: Uninitialized Value
  The value read from prediction_type[_] was never initialized.

libavcodec/alac.c:553:17: 
551.                                                prediction_quantitization[chan]);
552.             } else {
553.                 av_log(avctx, AV_LOG_ERROR, "FIXME: unhandled prediction type: %i\n", prediction_type[chan]);
                     ^
554.                 /* I think the only other prediction type (or perhaps this is
555.                  * just a boolean?) runs adaptive fir twice.. like:
