nsIDOMNode* resultingChild; mInner.AppendChild(aValue, &resultingChild);
nsCOMPtr<nsIDOMNode> resultingChild; mInner.AppendChild(aValue, getter_AddRefs(resultingChild));
nsHTMLTableElement::SetTFoot(nsIDOMHTMLTableSectionElement* aValue){  nsresult rv = DeleteTFoot();  if (NS_SUCCEEDED(rv)) {    if (nsnull!=aValue)    {      nsIDOMNode* resultingChild;      mInner.AppendChild(aValue, &resultingChild);    }  }  return rv;}