Fix DUAL_X_CARRIAGE manual move

Addressing #7745

Marlin/ultralcd.cpp

 
   // Function pointer to menu functions.
   typedef void (*screenFunc_t)();
+  typedef void (*menuAction_t)();
 
   #if HAS_POWER_SWITCH
     extern bool powersupply_on;
   void _menu_action_back();
   void menu_action_submenu(screenFunc_t data);
   void menu_action_gcode(const char* pgcode);
-  void menu_action_function(screenFunc_t data);
+  void menu_action_function(menuAction_t data);
 
   #define DECLARE_MENU_EDIT_TYPE(_type, _name) \
     bool _menu_edit_ ## _name(); \
       , int8_t eindex=-1
     #endif
   ) {
-    #if E_MANUAL > 1
-      if (axis == E_AXIS) manual_move_e_index = eindex >= 0 ? eindex : active_extruder;
+    #if ENABLED(DUAL_X_CARRIAGE) || E_MANUAL > 1
+      #if E_MANUAL > 1
+        if (axis == E_AXIS)
+      #endif
+          manual_move_e_index = eindex >= 0 ? eindex : active_extruder;
     #endif
     manual_move_start_time = millis() + (move_menu_scale < 0.99 ? 0UL : 250UL); // delay for bigger moves
     manual_move_axis = (int8_t)axis;
     else
       MENU_ITEM(gcode, MSG_AUTO_HOME, PSTR("G28"));
 
-    #if ENABLED(SWITCHING_EXTRUDER)
+    #if ENABLED(SWITCHING_EXTRUDER) || ENABLED(DUAL_X_CARRIAGE)
       if (active_extruder)
         MENU_ITEM(gcode, MSG_SELECT " " MSG_E1, PSTR("T0"));
       else