if (!mImportantRule && mDeclaration) { if (mDeclaration->HasImportantData()) { mImportantRule = new CSSImportantRule(mSheet, mDeclaration); NS_ADDREF(mImportantRule); }
if (!mImportantRule && mDeclaration->HasImportantData()) { mImportantRule = new CSSImportantRule(mSheet, mDeclaration); NS_IF_ADDREF(mImportantRule);
already_AddRefed<nsIStyleRule> CSSStyleRuleImpl::GetImportantRule(void){  if (!mImportantRule && mDeclaration) {    if (mDeclaration->HasImportantData()) {      mImportantRule = new CSSImportantRule(mSheet, mDeclaration);      NS_ADDREF(mImportantRule);    }  }  NS_IF_ADDREF(mImportantRule);  return mImportantRule;}