Removing call-time-pass-by-reference.

boxes.install

@@ -143,7 +143,7 @@ function boxes_update_6102() {
       'not null' => TRUE,
     );
     $new_keys = array('primary key' => array('delta'));
-    db_change_field(&$ret, 'box', 'delta', 'delta', $spec, $new_keys);
+    db_change_field($ret, 'box', 'delta', 'delta', $spec, $new_keys);
   }
   else {
     $ret['#abort'] = array('success' => FALSE, 'query' => "Could not resize the `box.delta` field. Some entries are larger than 32 characters and must be manually truncated.");