msi: Check HKLM/Software/Classes/Installer/Components path while looking for components

[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=16596

Your paranoid android.


=== w2008s64 (32 bit action) ===
action.c:5915: Test failed: MsiProvideQualifiedCompontent returned 1607