libavcodec/wavpack.c:270: error: Uninitialized Value
  The value read from sl[_] was never initialized.

libavcodec/wavpack.c:270:17: 
268.     for (i = 0; i <= ctx->stereo_in; i++) {
269.         if (ctx->hybrid_bitrate) {
270.             if (sl[i] - br[i] > -0x100)
                     ^
271.                 ctx->ch[i].error_limit = wp_exp2(sl[i] - br[i] + 0x100);
272.             else
