libavcodec/alac.c:469: error: Uninitialized Value
  The value read from prediction_type[_] was never initialized.

libavcodec/alac.c:469:17: 
467.                                                NULL, 31, 0);
468.             } else if (prediction_type[ch] > 0) {
469.                 av_log(avctx, AV_LOG_WARNING, "unknown prediction type: %i\n",
                     ^
470.                        prediction_type[ch]);
471.             }
