libavformat/wav.c:336: error: Uninitialized Value
  The value read from umid_parts[_] was never initialized.

libavformat/wav.c:336:17: 
334.             if (umid_parts[4] == 0 && umid_parts[5] == 0 && umid_parts[6] == 0 && umid_parts[7] == 0) {
335.                 /* basic UMID */
336.                 snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
                     ^
337.                          umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3]);
338.             } else {
