Checking the transition to make sure it's not null in the case the route is not transitioning and it's just a rollback of the model.
Checking the transition to make sure it's not null in the case the route is not transitioning
and it's just a rollback of the model.

kellyselden/ember-cli-dirty-confirm,kellyselden/ember-cli-dirty-confirm,pjmeadmtu/ember-cli-dirty-confirm,pjmeadmtu/ember-cli-dirty-confirm