defunct tame engulfer

defunct tame engulfer

     From the newsgroup:  Conflict caused tame engulfer to swallow hero.
To try to get out, player hit it (with Magicbane, but that's not relevant
other than to provide an alternate "you hit it" message).

  The magic-absorbing blade probes the invisible Audrey!
  You get regurgitated!
  placing defunct monster onto map?
  Program in disorder, &c
  [some look_here() feedback]
  You kill poor invisible Audrey!

The problem was caused by hmon_hitmon():  it subtracted damage from the
target's hit points, did some bookkeeping and message delivery, then
called killed().  One bit of bookkeeping was to call abuse_pet() and
monflee() when the target is tame, regardless of whether the damage was
fatal.  monflee() -> release_hero() -> expels() puts the hero and the
engulfer back onto the map, and that warning was triggered because the
former engulfer had no hit points left.