Fix Using DDraw to Access the Desktop

[Alexandre Julliard]

Robert Shearman <rob at codeweavers.com> writes:

> Previously, using ddraw to write to a small area of the desktop (or
> even none at all) would cause the screen to go black because the
> contents of the screen wasn't copied to the surface before the surface
> was copied back to the screen. This patch fixes that.

Of course it's still corrupting the screen, it's just less obvious...

-- 
Alexandre Julliard
julliard at winehq.org