[0.85] avoid notice


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@20670 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] clean r20668 


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@20671 35612d4c-9d10-0410-837c-bf9dd1be60d7