KmsHttpEPServer: Fix memory leak
KmsHttpEPServer: Fix memory leak

Change-Id: I1c7c56991776ca356fee2c099379273766ee75c1

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