ntdll: Don't modify LockCount in RtlLeaveCriticalSection if section is not acquired.

[Marvin]

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=29096

Your paranoid android.


=== wxppro (32 bit rtl) ===
rtl.c:2113: Test failed: expected LockCount == -2, got 0
rtl.c:2129: Test failed: expected LockCount == -1, got -2
rtl.c:2136: Test failed: expected LockCount == -1, got -3
ntdll:rtl has unreported failures