ole32/ole2: Don't call IDropTarget::QueryInterface() in RegisterDragDrop(). [whitespace fixed]

[Huw Davies]

> +static IDropTarget* WrapDropTarget(IDropTarget* inner)
> +{
> +    DropTargetWrapper* This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
> +
> +    if (This)
> +    {
> +        This->iface = (IDropTarget){ &DropTargetWrapper_VTbl };

This->iface.lpVtbl = &DropTargetWrapper_VTbl;

> -  hr = CoMarshalInterface(stream, &IID_IDropTarget, unk, MSHCTX_LOCAL, NULL, MSHLFLAGS_TABLESTRONG);
> -  IUnknown_Release(unk);
> +  hr = CoMarshalInterface(stream, &IID_IDropTarget, (IUnknown*)wrapper, MSHCTX_LOCAL, NULL, MSHLFLAGS_TABLESTRONG);
>  
>    if(SUCCEEDED(hr))
>    {
>      hr = create_map_from_stream(stream, &map);
>      if(SUCCEEDED(hr))
>      {
> -      IDropTarget_AddRef(pDropTarget);
>        SetPropW(hwnd, prop_oledroptarget, pDropTarget);

You probably want to set the window prop to the wrapper here.  Either
way you still need the AddRef (on the wrapper if you set that), it
gets released in RevokeDragDrop.

Huw.