kernel32: Revise SetThreadIdealProcessor to return success.

[Alexandre Julliard]

Andrew Nguyen <arethusa26 at gmail.com> writes:

> The image deblurring tool in bug 19548 tries to use
> SetThreadIdealProcessor on multi-core systems and checks the result of
> the call, which causes the application to fail. Simply reporting
> success in this case allows the application to run, and is perfectly
> harmless.

It breaks the tests.

-- 
Alexandre Julliard
julliard at winehq.org