when attempting to crawl out of water fails and hero is life-saved
or wizard-/explore-mode player declines to die. If the hero is saved
by positioning him/her one step further away from ball and chain,
teleds() tries to drag them, but if 'emergency disrobe' left the hero
stressed or worse, dragging fails. Ball and chain were being left
where they were, with chain no longer being adjacent to hero.
If drag_ball() fails, have teleds() teleport ball and chain to hero's
new spot, same as when that isn't within range of a one step drag.
projects / nethack / commit