api compatibility

library/Class/Autocomplete/IndexNull.php

@@ -16,19 +16,19 @@
  *
  * You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE
  * along with BOKEH; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA 
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
  */
 
 
 class Class_Autocomplete_IndexNull extends Class_Autocomplete_Index {
-  public function index($params) {
+  public function index($params=[]) {
     return;
   }
 
   public function indexPage($done) {
     $response->done = 0;
     $response->total= 0;
-    return $response;   
+    return $response;
   }
 }
 ?>
\ No newline at end of file