Quitting causes mutated iteration

[bubthegreat]

When trying to quit we get an error - we might need to copy the equipped.values() and then iterate over the copy instead of the original value, or find out why we're mutating this during save (I don't think this should be mutating during save)

12/02/2021 12:17:27 AM INFO     [rom24.commands.do_quit.do_quit:23] Bub has quit.
12/02/2021 12:17:27 AM ERROR    [rom24.comm.game_loop:265] Exception OrderedDict mutated during iteration caught - continuing loop.
Traceback (most recent call last):
  File "/home/bub/Development/rom24/src/rom24/comm.py", line 262, in game_loop
    process_input()
  File "/home/bub/Development/rom24/src/rom24/comm.py", line 25, in process_input
    d.connected()
  File "/home/bub/Development/rom24/src/rom24/nanny.py", line 618, in con_playing
    handler_game.substitute_alias(self, command)
  File "/home/bub/Development/rom24/src/rom24/handler_game.py", line 208, in substitute_alias
    ch.interpret(argument)
  File "/home/bub/Development/rom24/src/rom24/handler_pc.py", line 609, in interpret
    cmd.do_fun(self, argument.lstrip())
  File "/home/bub/Development/rom24/src/rom24/commands/do_quit.py", line 32, in do_quit
    ch.extract(True)
  File "/home/bub/Development/rom24/src/rom24/living.py", line 680, in extract
    for item_id in self.equipped.values():
RuntimeError: OrderedDict mutated during iteration