[0.85] fix for php 5.3.0

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21675 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] fix function's call for PHP 5.3.0

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21676 35612d4c-9d10-0410-837c-bf9dd1be60d7