Slightly modify custom menu code

Author: facchinm

src/Braccio++.h

@@ -68,13 +68,6 @@ class BraccioClass {
 	bool connected(int joint_index) {
 		return _connected[joint_index];
 	}
-	void createMenu() {
-		if (_customMenu != NULL) {
-			_customMenu();
-		} else {
-		  defaultMenu();
-		}
-	}
 
 	int getKey();
 	void connectJoystickTo(lv_obj_t* obj);

src/Braccio.cpp

@@ -109,8 +109,11 @@ bool BraccioClass::begin(voidFuncPtr customMenu) {
   p_objGroup = lv_group_create();
   lv_group_set_default(p_objGroup);
 
-  _customMenu = customMenu;
-  createMenu();
+  if (customMenu) {
+    customMenu();
+  } else {
+    defaultMenu();
+  }
 
 	gfx.fillScreen(TFT_BLACK);
 	gfx.println("\n\nPlease\nconnect\npower");