Function CoGetMarshalSizeMax 

pub unsafe extern "system" fn CoGetMarshalSizeMax(
    pulSize: *mut ULONG,
    riid: REFIID,
    pUnk: LPUNKNOWN,
    dwDestContext: DWORD,
    pvDestContext: LPVOID,
    mshlflags: DWORD,
) -> HRESULT