Update MK_Main.cpp

MK/module/MK_Main.cpp

@@ -2819,7 +2819,7 @@ void gcode_get_destination() {
     if(code_seen(axis_codes[E_AXIS])) IDLE_OOZING_retract(false);
   #endif
 
-  for (int i = 0; i < Z_AXIS; i++) {
+  for (int i = 0; i < 3; i++) {
     if (code_seen(axis_codes[i]))
       destination[i] = code_value() + (axis_relative_modes[i] || relative_mode ? current_position[i] : -hotend_offset[i][active_extruder]);
     else