user32: Make sure that main window state is consistent during the tests.

[Dmitry Timoshkov]

<testbot at testbot.winehq.org> (Marvin) wrote:

> While running your changed tests on Windows, I think I found new failures.
> Being a bot and all I'm not very good at pattern recognition, so I might be
> wrong, but could you please double-check?
> Full results can be found at
> http://testbot.winehq.org/JobDetails.pl?Key=3290

I'd say that's a usual set of intermittent failures in the win.c tests.

-- 
Dmitry.