ntdll: Remove more path trailing chars.

[Juan Lang]

Hi Vincent,

> Those tests are boolean, so I doubt an "ok(pass || fail /* NT4 */)" makes any
> sense.
> I saw that it is discouraged (forbidden ?) to depend on OS version in tests,
> so I will avoid that path unless asked to follow it.
> I've been advised on IRC to use "broken()", but I don't see how to use it for
> such boolean case (in my understanding it has a meaning if different error
> status a returned by different windows versions, not between a success and an
> error status).

It does work for a boolean case too.  You'd want to use "ok(pass ||
broken(fail /* NT4 */)".
--Juan