return anObserverService->RemoveObserver(this, htmlTopic.GetUnicode());
res = anObserverService->RemoveObserver(this, htmlTopic.GetUnicode()); } return res;
NS_IMETHODIMP nsMetaCharsetObserver::End() {    nsresult res = NS_OK;    NS_WITH_SERVICE(nsIObserverService, anObserverService, NS_OBSERVERSERVICE_CONTRACTID, &res);    if (NS_FAILED(res)) return res;         nsAutoString htmlTopic; htmlTopic.AssignWithConversion(kHTMLTextContentType);    return anObserverService->RemoveObserver(this, htmlTopic.GetUnicode());}