wined3d: fix regression in colorfill blt

[Alexander Dorofeyev]

Please do not apply this. Maxime Bellengé reported another BltOverride 
regression on wine-devel ("Syberia" game), in the codepath that does texture -> 
swapchain hw blitting. So instead of this one I'm going to send another patch to 
fix both colorfill and texture -> swapchain codepath.

Alexander Dorofeyev wrote:
> Hi.
> 
> Noticed some visual regressions in the AVP1 game I'm debugging - recent 
> changes
> broke hw colorfill in BltOverride.
> 
> ---
>     dlls/wined3d/surface.c |    4 ++--
>     1 files changed, 2 insertions(+), 2 deletions(-)
> 
> 
> 
> 
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