Merge "OMXNodeInstance: use a lock in freeNode" into lmp-dev am: 288566faba  -s ours am: 2a5e425ab4 am: 96c2fafc29 am: b9da9fc1aa
am: ee22f8a68e

Change-Id: I6af2a53aeced262206eff94fc5b79039a5792362