Ticket #15473: 15473.patch

wp-includes/user.php

@@ -61 +61 @@
         }
 
         wp_set_auth_cookie($user->ID, $credentials['remember'], $secure_cookie);
-        do_action('wp_login', $credentials['user_login']);
+        do_action('wp_login', $user->user_login, $user);
         return $user;
 }