libavcodec/alac.c:459: error: Uninitialized Value
  The value read from prediction_quantitization[_] was never initialized.

libavcodec/alac.c:459:17: 
457.             if (prediction_type[ch] == 0) {
458.                 /* adaptive fir */
459.                 predictor_decompress_fir_adapt(alac->predicterror_buffer[ch],
                     ^
460.                                                alac->outputsamples_buffer[ch],
461.                                                outputsamples,
