libavcodec/vorbisdec.c:812: error: Uninitialized Value
  The value read from n was never initialized.

libavcodec/vorbisdec.c:812:19: 
810.     }
811. 
812.     for (idx = 0; idx <= n; ++idx) {
                       ^
813.         av_dlog(NULL, "floor0 map: map at pos %d is %d\n", idx, map[idx]);
814.     }
