launch: do not log on destructive transactions
launch: do not log on destructive transactions

If we try to activate a service that is in the process of being stopped,
systemd refuses with an error message like:

    dbus-broker-launch[760]: Activation request for
        'org.freedesktop.login1' failed: Transaction for
        systemd-logind.service/start is destructive (local-fs.target has
        'stop' job queued, but 'start' is included in transaction).

This is expected behavior, especially on shutdown, so we should not be
logging about that.

Signed-off-by: Tom Gundersen <7c8224529a7c718e876cb2496c973509fde1e50e@jklm.no>
Signed-off-by: David Rheinsberg <1e7ff67ac6e6692b085f67edeb10803d9022c525@gmail.com>

bus1/dbus-broker