kaspersky problem #1: diff

0a1,2
> // https://habr.com/article/353768/
> // problem #1
9a12
>   Item(Item&& obj): m_data(std::move(obj.m_data)) { }
19a23,27
>     ItemEx(ItemEx&& obj)
>         : Item(std::move(obj))
>         , m_dataEx(std::move(obj.m_dataEx))
>     { }
>