libavcodec/alac.c:457: error: Uninitialized Value
  The value read from prediction_type[_] was never initialized.

libavcodec/alac.c:457:17: 
455.                                         (1 << alac->setinfo_rice_kmodifier) - 1);
456. 
457.             if (prediction_type[ch] == 0) {
                     ^
458.                 /* adaptive fir */
459.                 predictor_decompress_fir_adapt(alac->predicterror_buffer[ch],
