setupapi/tests: Remove an unneeded cast.

[Francois Gouget]

On Thu, 8 Jan 2009, Hans Leidekker wrote:
[...]
> I don't know where the prototype came from, there was a stub there already
> which entered Wine with commit 8196e2d0d0dbd04325201e14d95f88cad3cfd00f.

I did not find it in my SDKs either. And a web search turned no useful 
result.


> So we might as well change the prototype, given its demonstrated behavior.

Works for me. I'm sending a patch...


-- 
Francois Gouget <fgouget at free.fr>              http://fgouget.free.fr/
        War doesn't determine who's right.  War determines who's left.