wined3d: Synchronize window style correcting code with ddraw

[H. Verbeet]

On 18/01/07, Dmitry Timoshkov <dmitry at codeweavers.com> wrote:
> Hello,
>
> this patch should fix the regression reported on #wine-hackers.
>
> Changelog:
>     wined3d: Synchronize window style correcting code with ddraw.
>
Although afaik there's nothing wrong with this patch, I do have a
patch myself that moves the ddraw code for doing this to wined3d so
that both use the same code.