minor fix

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@22050 35612d4c-9d10-0410-837c-bf9dd1be60d7
apply r21962

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@22051 35612d4c-9d10-0410-837c-bf9dd1be60d7