[PATCH] ntoskrnl.exe: Make several string constants static

[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=45252

Your paranoid android.


=== debian9 (32 bit report) ===

ntoskrnl.exe:
driver.c:457: Test failed: got 0