make e_pointer_object_set() a no-op when passing the existing cursor

src/bin/e_pointer.c

@@ -799,7 +799,7 @@ e_pointer_object_set(E_Pointer *ptr, Evas_Object *obj, int x, int y)
           ec->hidden = 1;
         ecore_evas_object_cursor_set(ptr->ee, obj, E_LAYER_MAX - 1, x, y);
      }
-   else
+   else if (o != ptr->o_ptr)
      ecore_evas_object_cursor_set(ptr->ee, ptr->o_ptr, E_LAYER_MAX - 1, ptr->hot.x, ptr->hot.y);
 }