Minor codestyle fix
diff --git a/system/database/drivers/interbase/interbase_utility.php b/system/database/drivers/interbase/interbase_utility.php
index d90ecae..7642755 100644
--- a/system/database/drivers/interbase/interbase_utility.php
+++ b/system/database/drivers/interbase/interbase_utility.php
@@ -100,6 +100,7 @@
 	public function _backup($params = array())
 	{
 		// Currently unsupported
+		// @todo See if can be implemented
 		return $this->db->display_error('db_unsuported_feature');
 	}
 }