services: Fix racy setState when updating timer properties
services: Fix racy setState when updating timer properties

When calling the addTimerProperties don't use the old state as a base
object, but the just updated object.

deryni/cockpit,cockpit-project/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpituous/cockpit,garrett/cockpit,deryni/cockpit,cockpit-project/cockpit,cockpituous/cockpit,cockpit-project/cockpit,deryni/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,deryni/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,garrett/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,mvollmer/cockpit,mvollmer/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,martinpitt/cockpit,moraleslazaro/cockpit,deryni/cockpit,garrett/cockpit,deryni/cockpit,cockpituous/cockpit,cockpituous/cockpit,mvollmer/cockpit,deryni/cockpit,moraleslazaro/cockpit,garrett/cockpit,garrett/cockpit,mvollmer/cockpit,mvollmer/cockpit,cockpituous/cockpit,cockpit-project/cockpit