fix unlock process


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@20092 35612d4c-9d10-0410-837c-bf9dd1be60d7
unlock virtual machine


git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@20093 35612d4c-9d10-0410-837c-bf9dd1be60d7