libavcodec/wmaenc.c:76: error: Uninitialized Value
  The value read from extradata was never initialized.

libavcodec/wmaenc.c:76:5: 
74.         assert(0);
75.     }
76.     avctx->extradata          = extradata;
        ^
77.     s->use_exp_vlc            = flags2 & 0x0001;
78.     s->use_bit_reservoir      = flags2 & 0x0002;
