libavcodec/wavpack.c:217: error: Uninitialized Value
  The value read from br[_] was never initialized.

libavcodec/wavpack.c:217:13: 
215.             br[0] = 0;
216.         }else if(-balance > br[0]){
217.             br[0] <<= 1;
                 ^
218.             br[1] = 0;
219.         }else{
