test/dbus/broker: force sd-bus to clean up after itself
test/dbus/broker: force sd-bus to clean up after itself

This is almost certainly a bug in sd-bus, but for now force it to clean up properly,
as not to leak any memory.

Signed-off-by: Tom Gundersen <7c8224529a7c718e876cb2496c973509fde1e50e@jklm.no>

bus1/dbus-broker