Add missing use statements

Author: fabpot

User/LdapUserProvider.php

@@ -11,12 +11,12 @@
 
 namespace Symfony\Component\Security\Core\User;
 
-@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', LdapUserProvider::class, BaseLdapUserProvider::class), E_USER_DEPRECATED);
-
 use Symfony\Component\Ldap\Entry;
 use Symfony\Component\Ldap\Security\LdapUserProvider as BaseLdapUserProvider;
 use Symfony\Component\Security\Core\Exception\UnsupportedUserException;
 
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', LdapUserProvider::class, BaseLdapUserProvider::class), E_USER_DEPRECATED);
+
 /**
  * LdapUserProvider is a simple user provider on top of ldap.
  *