schedsvc/tests: Recognize Windows 10's RPC version.

[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=20636

Your paranoid android.


=== w1064 (32 bit rpcapi) ===
rpcapi.c:151: Test failed: expected ERROR_FILE_NOT_FOUND, got 0