nsAutoString prop; prop.AssignWithConversion(".LangGroup");
NS_IMETHODIMP nsCharsetConverterManager::GetCharsetLangGroup(                                         const nsIAtom * aCharset,                                          nsIAtom ** aResult){  if (aCharset == NULL) return NS_ERROR_NULL_POINTER;  if (aResult == NULL) return NS_ERROR_NULL_POINTER;  *aResult = NULL;  nsresult res = NS_OK;  nsAutoString prop; prop.AssignWithConversion(".LangGroup");  if (mDataBundle == NULL) {    res = LoadExtensibleBundle(NS_DATA_BUNDLE_REGISTRY_KEY, &mDataBundle);    if (NS_FAILED(res)) return res;  }  res = GetBundleValue(mDataBundle, aCharset, &prop, aResult);  return res;}