DDraw Clipper fix

[Ove Kaaven]

On Sat, 3 Aug 2002, Lionel Ulmer wrote:

> This should hopefully fix bug :
>    Bug 936 - Incorrect placement of DirectDraw output (offset outside the Windows 'window')
> 
> Basically, the logic to compute the clipping window was wrong (or at least I
> did not understand all the subtilities of the code :-) ). At least with this
> fix, this particular application now runs fine.

I'm 99% sure I fixed this in my last patch submission to winehq a while
ago. Seems Alexandre applied it after 20020710, though. So I don't think
your patch applies on top of CVS.