msi: Dont crash on installation of services without component KeyPath

[Dmitry Timoshkov]

Francois Gouget <fgouget at codeweavers.com> wrote:

> You're in luck then. The new testbot now has a Windows 2000 VM...

Probably it's time then to make testbot process the tasks slightly
faster, currently it's speed is completely unacceptable. For that
reason I was using old testbot instead, but since it's no longer
available this creates additional problems and prevents productive
work.

-- 
Dmitry.