[ticket/13358] Fix tests and use exceptions instead of user object

PHPBB3-13358

tests/version/version_fetch_test.php

@@ -33,6 +33,7 @@ class phpbb_version_helper_fetch_test extends phpbb_test_case
 			new \phpbb\config\config(array(
 				'version'	=> '3.1.0',
 			)),
+			new \phpbb\file_downloader(),
 			new \phpbb\user('\phpbb\datetime')
 		);
 	}