Alexandros Frantzis (@afrantzis) commented about dlls/winewayland.drv/wayland_pointer.c:
process_wayland.zwp_relative_pointer_manager_v1, pointer->wl_pointer); zwp_relative_pointer_v1_add_listener(pointer->zwp_relative_pointer_v1,
&relative_pointer_v1_listener, NULL);
&relative_pointer_v1_listener, pointer);
Although passing `pointer` as user data is fine, we can also just have `struct wayland_pointer *pointer = &process_wayland.pointer;` in the relative motion handler, like we do in the other pointer handlers (since we only have one pointer at the moment).