message: de-nesting code
diff: @@ -74,7 +74,9 @@ static const Matcher& DisableMatcher() {
  void DisableStatementNoLabelsRule::HandleSymbol(
  const verible::Symbol& symbol, const SyntaxTreeContext& context) {
  verible::matcher::BoundSymbolManager manager;
  - if (DisableMatcher().Matches(symbol, &manager)) {
  + if (!DisableMatcher().Matches(symbol, &manager)) {
  + return;
  + }
  const char* kMessageFinal = DisableStatementNoLabelsRule::kMessage;
  // if no kDisable label, return, nothing to be checked
  const auto& disableLabels = FindAllSymbolIdentifierLeafs(symbol);
  @@ -119,7 +121,6 @@ void DisableStatementNoLabelsRule::HandleSymbol(
  }
  violations_.insert(LintViolation(symbol, kMessageFinal, context));
  }
  -}
  LintRuleStatus DisableStatementNoLabelsRule::Report() const {
  return LintRuleStatus(violations_, Name(), GetStyleGuideCitation(kTopic));
  