Simplify focusnext(). We already have a pointer to our place in the wslist in struct client. Use it! Don't go through the list looking for our data.
Simplify focusnext(). We already have a pointer to our place in the
wslist in struct client. Use it! Don't go through the list looking for
our data.

bbidulock/mcwm,tkln/mcwm,tkln/mcwm,bbidulock/mcwm