[QUARTZ] Several fixes

[Rolf Kalbermatter]

> @@ -135,7 +154,7 @@
>     IEnumMediaTypesImpl *This = (IEnumMediaTypesImpl *)iface;
>     ULONG refCount = InterlockedIncrement(&This->refCount);
> - TRACE("()\n");
> - TRACE("(%p)->() Release from %ld\n", iface, refCount + 1);

^^^^^^^^^^

This is in AddRef so the comment (and calculation of refCount to report) seems wrong to me.
> return refCount;
>
> }

Rolf Kalbermatter