Refactoring and fixing a bug in close session message
Refactoring and fixing a bug in close session message

Change-Id: I854c513a9084cae589813bb1ae360d3e67eecf96
Signed-off-by: TanelDettenborn <b78e06a93b55ca1de0e9b602be506ea7b7368e0f@intel.com>

Open-TEE/tee-engine