[2/2] secur32/tests: Fix GetUserNameEx() tests (try 2)

[Ge van Geldorp]

Hi Paul,

> From: Paul Vriens
> 
> Why did you remove:
>
> -    if (0) /* Crashes on Windows */
> -        rc = pGetUserNameExW(NameSamCompatible, NULL, NULL);
> -
>
> The point of these additions was to show/document that Windows crashes 
> when called like this.

Because Alexandre told me for an earlier patch to remove tests that crash on
Windows: http://www.winehq.org/pipermail/wine-devel/2009-January/072010.html

Ge.