Fix warning

htdocs/resource/card.php

@@ -225,7 +225,7 @@ if ($action == 'create' || $object->fetch($id, $ref) > 0) {
 		// Type
 		print '<tr><td>'.$langs->trans("ResourceType").'</td>';
 		print '<td>';
-		$ret = $formresource->select_types_resource($object->fk_code_type_resource, 'fk_code_type_resource', '', 2);
+		$formresource->select_types_resource($object->fk_code_type_resource, 'fk_code_type_resource', '', 2);
 		print '</td></tr>';
 
 		// Description