Added a todo for after 1.4 branching.

src/race.cpp

@@ -152,6 +152,9 @@ unit_race::unit_race(const config& cfg) :
 		global_traits_(!utils::string_bool(cfg["ignore_global_traits"]))
 
 {
+	//! @todo FIXME remove support after branching 1.4.
+	//! 2 versions with lg::wml_error
+	//! WML_ASSERT after that
 	if(id_.empty()) {
 		// This code is only for compatibility with old race defs.
 		id_ = (cfg["name"]);