Fixed: Forgot to unlock session
Fixed: Forgot to unlock session

(cherry picked from commit aa2e1958f5ec063419ca4b8f9642a94541e4d838)

uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend,uroni/urbackup_backend