if (nsnull == aResult) { rv = NS_ERROR_NULL_POINTER; } else { *aResult = mContainer; NS_IF_ADDREF(*aResult); } return rv;
*aResult = mContainer; NS_IF_ADDREF(*aResult);  return NS_OK;
nsDocLoaderImpl::GetContainer(nsIContentViewerContainer** aResult){  nsresult rv = NS_OK;  if (nsnull == aResult) {    rv = NS_ERROR_NULL_POINTER;  } else {    *aResult = mContainer;    NS_IF_ADDREF(*aResult);  }  return rv;}