simpler Lua boilerplate

stepmania/src/OptionIconRow.cpp

@@ -145,14 +145,13 @@ void OptionIconRow::SetFromGameState( PlayerNumber pn )
 class LunaOptionIconRow: public Luna<OptionIconRow>
 {
 public:
-	LunaOptionIconRow() { LUA->Register( Register ); }
 	static int set( T* p, lua_State *L )		{ p->SetFromGameState( Enum::Check<PlayerNumber>(L, 1) ); return 0; }
 
-	static void Register(lua_State *L) 
+	LunaOptionIconRow()
 	{
-		ADD_METHOD( set );
+		LUA->Register( Register );
 
-		Luna<T>::Register( L );
+		ADD_METHOD( set );
 	}
 };