content->GetTag(*getter_AddRefs(tag));
content->GetTag(getter_AddRefs(tag));
static void FindBodyElement(nsIContent* aParent, nsIContent** aResult){  *aResult = nsnull;  ChildIterator iter, last;  for (ChildIterator::Init(aParent, &iter, &last); iter != last; ++iter) {    nsCOMPtr<nsIContent> content = *iter;    nsCOMPtr<nsIAtom> tag;    content->GetTag(*getter_AddRefs(tag));    if (tag.get() == nsXULAtoms::treechildren) {      *aResult = content;      NS_ADDREF(*aResult);      break;    }    else if (tag != nsXULAtoms::templateAtom) {      FindBodyElement(content, aResult);      if (*aResult)        break;    }  }}