kmsplumberendpoint: Fix memory leak
kmsplumberendpoint: Fix memory leak

Change-Id: I989d823d57e096de0859d942447246a650dc5de3

shelsonjava/kms-elements,TribeMedia/kms-elements,TribeMedia/kms-elements,shelsonjava/kms-elements,shelsonjava/kms-elements,TribeMedia/kms-elements