Used by the routine at next_frame_or_die.

Reached at the start of a game and whenever both halves of Sabreman have gone from the object table. lose_life copies back the two player records that were saved when he entered the room, takes a life (ending the game when there are none), and makes him man or werewolf by whether it is day or night. The records come back as type 120, so he materialises where he came in.