dinput: Support IUnknown in the IDirectInputEffect COM object.

[Huw Davies]

On Tue, Mar 15, 2016 at 10:37:16AM +0100, Michael Stefaniuc wrote:
> Signed-off-by: Michael Stefaniuc <mstefani at redhat.de>
> ---
>  dlls/dinput/joystick_osx.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/dlls/dinput/joystick_osx.c b/dlls/dinput/joystick_osx.c
> index 6a8926d..19ca070 100644
> --- a/dlls/dinput/joystick_osx.c
> +++ b/dlls/dinput/joystick_osx.c
> @@ -1474,7 +1474,7 @@ static HRESULT WINAPI effect_QueryInterface(IDirectInputEffect *iface,
>  
>      TRACE("%p %s %p\n", This, debugstr_guid(guid), out);
>  
> -    if(IsEqualIID(guid, &IID_IDirectInputEffect)){
> +    if(IsEqualGUID(riid, &IID_IUnknown) || IsEqualIID(guid, &IID_IDirectInputEffect)){

It looks a bit strange to mix IsEqualGUID and IsEqualIID.

Huw.