libavformat/wav.c:340: error: Uninitialized Value
  The value read from umid_parts[_] was never initialized.

libavformat/wav.c:340:17: 
338.             } else {
339.                 /* extended UMID */
340.                 snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
                     ^
341.                                              "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
342.                          umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3],
