[3/4] psapi/tests: Adjust margin for win10

[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=16971

Your paranoid android.


=== w1064 (32 bit psapi_main) ===
psapi_main.c:627: Test failed: wrong length 3
psapi_main.c:643: Test failed: wrong length 3

=== w1064 (64 bit psapi_main) ===
psapi_main.c:627: Test failed: wrong length 3
psapi_main.c:643: Test failed: wrong length 3