Coding Standards: Always use parentheses when instantiating an object.

Note: This will be enforced by WPCS 3.0.0.

Props jrf.
See #56791.

git-svn-id: https://develop.svn.wordpress.org/trunk@54891 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-admin-bar.php

@@ -41,7 +41,7 @@ class WP_Admin_Bar {
 	 * @since 3.1.0
 	 */
 	public function initialize() {
-		$this->user = new stdClass;
+		$this->user = new stdClass();
 
 		if ( is_user_logged_in() ) {
 			/* Populate settings we need for the menu based on the current user. */