Made RTL always the current Altitude

ArduCopter/commands.pde

@@ -107,10 +107,13 @@ static void set_cmd_with_index(struct Location temp, int i)
 
 static int32_t read_alt_to_hold()
 {
+	return current_loc.alt;
+	/*
 	if(g.RTL_altitude <= 0)
 		return current_loc.alt;
 	else
 		return g.RTL_altitude;// + home.alt;
+	*/
 }