wined3d: Fixed render states

[Louis. Lenders]

> It would be good if someone with an ATI card could

download the
> point_sprite_bug sample mentioned on that page and

test it out to see if
> it is still an issue.

I tested it and this is what i get:
the app starts up and looks just as the picture on the
website
If i push the spacebar i get i completely black
screen.
Pushing again brings up the correct "picture" again

I have ATI RADEON 9600 XT Generic, on fedora core 3
with livna drivers.
Hope this info is of any use to you...

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