Ticket #28673: 28673.5.diff

src/wp-admin/includes/class-wp-plugin-install-list-table.php

@@ -179 +179 @@
                 $this->items = $api->plugins;
 
                 if ( $this->orderby ) {
-                        uasort( $this->items, array( $this, '_order_callback' ) );
+                        uasort( $this->items, array( $this, 'order_callback' ) );
                 }
 
                 $this->set_pagination_args( array(
@@ -304 +304 @@
                 return array();
         }
 
-        public function _order_callback( $plugin_a, $plugin_b ) {
+        private function order_callback( $plugin_a, $plugin_b ) {
                 $orderby = $this->orderby;
                 if ( ! isset( $plugin_a->$orderby, $plugin_b->$orderby ) ) {
                         return 0;