libavcodec/vorbisdec.c:857: error: Uninitialized Value
  The value read from n was never initialized.

libavcodec/vorbisdec.c:857:19: 
855.     }
856. 
857.     for (idx = 0; idx <= n; ++idx) {
                       ^
858.         ff_dlog(NULL, "floor0 map: map at pos %d is %d\n", idx, map[idx]);
859.     }
