libavcodec/vp3.c:928: error: Uninitialized Value
  The value read from custom_mode_alphabet[_] was never initialized.

libavcodec/vp3.c:928:21: 
926.                     coding_mode = get_bits(gb, 3);
927.                 else if(scheme == 0)
928.                     coding_mode = custom_mode_alphabet
                         ^
929.                         [get_vlc2(gb, s->mode_code_vlc.table, 3, 3)];
930.                 else
