class bla
{
    STDMETHOD(InterfaceSupportsErrorInfo)(REFIID riid)
    {
        static const IID* arr[] = 
        {
            &GUID_NULL,
        };
        for (int i=0; i<sizeof(arr)/sizeof(arr[0]); i++)
        {
            if (InlineIsEqualGUID(*arr[i], riid))
                return S_OK;
        }
        return S_FALSE;
    }
};
now select the for loop and do extract method.
i found this thread after searching for STDMETHOD which pointed me first to TOPIC_ID=5440 and then i ll ended up here:)
looking closely there seems to be another bug... the new methods first param uses 'static' as qualifier.