libavcodec/vp3.c:905: error: Uninitialized Value
  The value read from custom_mode_alphabet[_] was never initialized.

libavcodec/vp3.c:905:17: 
903.                     ModeAlphabet[scheme-1][i]);
904.             else
905.                 debug_modes("      mode[0][%d] = %d\n", i,
                     ^
906.                     custom_mode_alphabet[i]);
907.         }
