Class MoveIssue2

tests/test_copy_move.cpp:286–290

        .def_readwrite("value", &MoveIssue1::v);

    struct MoveIssue2 {
        int v;
        explicit MoveIssue2(int v) : v{v} {}
        MoveIssue2(MoveIssue2 &&) = default;
    };
    py::class_<MoveIssue2>(m, "MoveIssue2")
        .def(py::init<int>())
        .def_readwrite("value", &MoveIssue2::v);