libavcodec/wavpack.c:214: error: Uninitialized Value
  The value read from br[_] was never initialized.

libavcodec/wavpack.c:214:13: 
212.         int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
213.         if(balance > br[0]){
214.             br[1] = br[0] << 1;
                 ^
215.             br[0] = 0;
216.         }else if(-balance > br[0]){
