remove parent parameter. Use self:GetParent().

stepmania/src/Actor.cpp

@@ -1014,14 +1014,8 @@ void Actor::RunCommands( const LuaReference& cmds )
 	// 1st parameter
 	this->PushSelf( L );
 	
-	// 2nd parameter
-	if( m_pParent )
-		m_pParent->PushSelf( L );
-	else
-		lua_pushnil( L );
-
-	// call function with 2 arguments and 0 results
-	lua_call( L, 2, 0 ); 
+	// call function with 1 argument and 0 results
+	lua_call( L, 1, 0 ); 
 
 	LUA->Release(L);
 }

stepmania/src/LuaManager.cpp

@@ -609,7 +609,7 @@ void LuaHelpers::ParseCommandList( Lua *L, const RString &sCommands, const RStri
 		//
 		ostringstream s;
 		
-		s << "return function(self,parent)\n";
+		s << "return function(self)\n";
 
 		FOREACH_CONST( Command, cmds.v, c )
 		{