Fix the kernel/locale tests

[Mehmet YASAR]

Francois Gouget wrote:
> 
> So undocumented features should not be tested unless there is a really
> good reason to do so. Unless you know of a specific application that
> depends on it, there is no good reason to check whether a buffer is or
> is not modified when it is too short.
>
Hi,

I'm the author of the locale test. It has been written mainly to help 
fixing bug 367 (see http://bugs.winehq.com/show_bug.cgi?id=637) and 
that's why it is testing undocumented behavior.

Two application like "HTMLKit" or "Font xplorer lite" rely on this weird 
behavior.

Mehmet