[PATCH] msi/tests: Add a trailing '\n' to an ok() call.

[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=43415

Your paranoid android.


=== w7u (32 bit Windows report) ===

msi:
msi: Timeout