tree 275cbca0debd286bbe3964ee259731332c72604b
parent 858637a0bf95f8de42f212c9dd6312b6b9e92432
author Carmelo Cascone <carmelo@opennetworking.org> 1556479994 -0700
committer Carmelo Cascone <carmelo@opennetworking.org> 1556479994 -0700

Fix NPE in FlowObjectiveManager when unregistering pipeconf drivers

The DriverManager was returning null instead of generating an
ItemNotFound exception as expected.

Change-Id: I4da6e07bfc3793ac0184cae40ce7f39b398e97f1