tree 3a0985334094334ef6f700da85b7e38ec5e0bcd1
parent af877e9e7abbf1febc2971d3a703f6f28476fb6d
author Carmelo Cascone <carmelo@opennetworking.org> 1556479994 -0700
committer Ray Milkey <ray@opennetworking.org> 1556559693 +0000

Fix NPE in FlowObjectiveManager when unregistering pipeconf drivers

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

Change-Id: I4da6e07bfc3793ac0184cae40ce7f39b398e97f1
(cherry picked from commit 363660d96196c6da3b39b817bc7a8cb43df19330)