diff -r c7c34916027a -r 177826044cd9 wp/wp-includes/customize/class-wp-customize-nav-menu-section.php
--- a/wp/wp-includes/customize/class-wp-customize-nav-menu-section.php	Mon Oct 14 18:06:33 2019 +0200
+++ b/wp/wp-includes/customize/class-wp-customize-nav-menu-section.php	Mon Oct 14 18:28:13 2019 +0200
@@ -33,7 +33,7 @@
 	 * @return array Exported parameters.
 	 */
 	public function json() {
-		$exported = parent::json();
+		$exported            = parent::json();
 		$exported['menu_id'] = intval( preg_replace( '/^nav_menu\[(-?\d+)\]/', '$1', $this->id ) );
 
 		return $exported;