[3/3] msi/tests: Fix some test failures on 64-bit.

[testbot at testbot.winehq.org]

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
http://testbot.winehq.org/JobDetails.pl?Key=5126

Your paranoid android.


=== W7PROX64 (64 bit package) ===
package.c:8361: Test failed: Expected "C:\Program Files\VMware\VMware Tools\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\", got "C:\Program Files (x86)\VMware\VMware Tools\;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\"