Fixes scoreboard runtimes

somebody changed this:

  for(var/mob/living/carbon/human/E in mob_list)

to this:

  for(var/mob/living/player in player_list)

without changing this line:

  get_contents_in_object(E, /obj/item/weapon/card/id))

causing the poor proc to try to find ID cards in the number 2.7182818284590