message: Replace unreachable with radeco_err!
diff: @@ -267,7 +267,7 @@ impl<'a> CASTBuilder<'a> {
  radeco_warn!("block with conditional successors has no selector {:?}", cur_node);
  }
  } else {
  - unreachable!();
  + radeco_err!("Unreachable node {:?}", cur_node);
  }
  } else if self.ssa.is_block(cur_node) {
  last = Some(cur_node);
  