Issue #2062183 by cloud2006, LinL, m1r1k, likin: Remove calls to deprecated...

Issue #2062183 by cloud2006, LinL, m1r1k, likin: Remove calls to deprecated global  in core/modules/user/lib/Drupal/user/AccountFormController.php.

core/modules/user/lib/Drupal/user/AccountFormController.php

@@ -48,7 +48,7 @@ public static function create(ContainerInterface $container) {
    */
   public function form(array $form, array &$form_state) {
     $account = $this->entity;
-    global $user;
+    $user = $this->currentUser();
     $config = \Drupal::config('user.settings');
 
     $language_interface = language(Language::TYPE_INTERFACE);