[PATCH 5/5] msi: Make MsiGetSourcePath() RPC-compatible.

[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=37898

Your paranoid android.


=== w7pro64 (64 bit custom) ===
The previous 1 run(s) terminated abnormally