libavcodec/wavpack.c:257: error: Uninitialized Value
  The value read from br[_] was never initialized.

libavcodec/wavpack.c:257:13: 
255.     if (ctx->stereo_in && ctx->hybrid_bitrate) {
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;
