libavcodec/wavpack.c:258: error: Uninitialized Value
  The value read from br[_] was never initialized.

libavcodec/wavpack.c:258:13: 
256.         int balance = (sl[1] - sl[0] + br[1] + 1) >> 1;
257.         if (balance > br[0]) {
258.             br[1] = br[0] << 1;
                 ^
259.             br[0] = 0;
260.         } else if (-balance > br[0]) {
