kmshttpendpoint: Fix memory leaks in info messages
kmshttpendpoint: Fix memory leaks in info messages

Change-Id: I92de80f58d093b23e751d690cebc94b0dfebd560

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