message: Add a break to avoid an unannotated fall-through.
diff: @@ -63,6 +63,7 @@ MSVCUndecoratedNameParser::MSVCUndecoratedNameParser(llvm::StringRef name) {
  name.slice(last_base_start, i - 1));
  last_base_start = i + 1;
  + break;
  default:
  break;
  }
  