elm_box: fix move to evas_object_box and avoid double-deletion.

We must clear the box before, otherwise on delete it will
automatically delete all existing children, which would be deleted
right after with sub-objects.



SVN revision: 43675

legacy/elementary/src/lib/elm_box.c

@@ -43,6 +43,7 @@ static void
 _del_hook(Evas_Object *obj)
 {
    Widget_Data *wd = elm_widget_data_get(obj);
+   evas_object_box_remove_all(wd->box, 0);
    evas_object_del(wd->box);
    free(wd);
 }