[PATCH 2/2] msi/tests: Fix a crash on Windows 10.

[Marvin]

Hi,

While running your changed tests, 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=63292

Your paranoid android.


=== w2003std (task log) ===

Task errors:
The task timed out

=== wvistau64 (task log) ===

Task errors:
The task timed out

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

msi:
install: Timeout

=== w1064v1809_ar (task log) ===

Task errors:
The task timed out

=== w1064v1809_he (32 bit report) ===

msi:
install: Timeout

=== w1064v1809_he (task log) ===

Task errors:
The task timed out

=== w1064v1809_ja (32 bit report) ===

msi:
install: Timeout

=== w1064v1809_zh_CN (task log) ===

Task errors:
The task timed out

=== wvistau64 (64 bit report) ===

msi:
install: Timeout