Merge pull request #526 from Citadel-Station-13/upstream-merge-26289

[MIRROR] Changed alternate appearances to  /datum/atom_hud s

code/game/gamemodes/antag_hud.dm

@@ -49,7 +49,7 @@
 
 /datum/mind/proc/leave_all_antag_huds()
 	for(var/datum/atom_hud/antag/hud in GLOB.huds)
-		if(current in hud.hudusers)
+		if(hud.hudusers[current])
 			hud.leave_hud(current)
 
 /datum/atom_hud/antag/gang

code/game/gamemodes/blob/theblob.dm

@@ -307,7 +307,7 @@
 /obj/structure/blob/examine(mob/user)
 	..()
 	var/datum/atom_hud/hud_to_check = GLOB.huds[DATA_HUD_MEDICAL_ADVANCED]
-	if(user.research_scanner || (user in hud_to_check.hudusers))
+	if(user.research_scanner || hud_to_check.hudusers[user])
 		to_chat(user, "<b>Your HUD displays an extensive report...</b><br>")
 		chemeffectreport(user)
 		typereport(user)