fix extract_template - fixed #4828

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@22778 35612d4c-9d10-0410-837c-bf9dd1be60d7
minor fix

git-svn-id: https://forge.indepnet.net/svn/glpi/trunk@22780 35612d4c-9d10-0410-837c-bf9dd1be60d7