In `wp_nav_menu()`, ensure that the `$menu` arg is populated when passed to filters.

Props greuben, chriscct7.
Fixes #16594.

Built from https://develop.svn.wordpress.org/trunk@32803


git-svn-id: http://core.svn.wordpress.org/trunk@32774 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/nav-menu-template.php

@@ -291,6 +291,10 @@ function wp_nav_menu( $args = array() ) {
 		}
 	}
 
+	if ( empty( $args->menu ) ) {
+		$args->menu = $menu;
+	}
+
 	// If the menu exists, get its items.
 	if ( $menu && ! is_wp_error($menu) && !isset($menu_items) )
 		$menu_items = wp_get_nav_menu_items( $menu->term_id, array( 'update_post_term_cache' => false ) );

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32802';
+$wp_version = '4.3-alpha-32803';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.