[ticket/11832] Fix INCLUDE(JS/CSS)

PHPBB3-11832

tests/mock/extension_manager.php

@@ -18,7 +18,8 @@ class phpbb_mock_extension_manager extends phpbb_extension_manager
 			new phpbb_symfony_request(
 				new phpbb_mock_request()
 			),
-			$phpbb_root_path
+			$this->phpbb_root_path,
+			$this->php_ext
 		);
 	}
 }