Huw Davies (@huw) commented about dlls/combase/marshal.c:
/* Client-side identity of the server object */
static HRESULT proxy_manager_get_remunknown(struct proxy_manager * This, IRemUnknown **remunk); +static LONG proxy_manager_addref_if_alive(struct proxy_manager * This);
This seems unnecessary as the its definition comes before its use.