`wayland_attach` doesn't really use the display name parameter

Hi, I did a system upgrade earlier and noticed that my wayvnc setup stops working, so I did a little digging and just found that `display` isn't passed to `init_wayland` here: https://github.com/any1/wayvnc/blob/0596d1135ca04bb793218846475572f6ea93d899/src/main.c#L2102 Is this intended?