cmd/tests: Simplify boolean expressions (PVS-Studio)

[Frédéric Delanoy]

On Wed, Oct 14, 2015 at 11:18 AM, Marvin <testbot at winehq.org> wrote:
> Hi,
>
> 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
> https://testbot.winehq.org/JobDetails.pl?Key=17349
>
> Your paranoid android.
>
>
> === wxppro (32 bit batch) ===
> batch.c:312: Test failed: unexpected char 0x47 position 0 in line 708 (got 'Got unexpected result: "C:\Documents"', wanted 'Plain directory enumeration from provided root')
...

The tests were already failing on some windows on master ; this patch
shouldn't cause any regression.

I will look into the issue.

--

Frédéric