Fixes bug allowing player to multiclick WG

code/game/machinery/wishgranter.dm

@@ -9,6 +9,7 @@
 	density = 1
 	var/datum/mind/target
 	var/list/types = list()
+	var/inuse = 0
 
 /obj/machinery/wish_granter/New()
 	for(var/supname in all_superheroes)
@@ -24,22 +25,30 @@
 
 	else if(is_special_character(user))
 		user << "Even to a heart as dark as yours, you know nothing good will come of this.  Something instinctual makes you pull away."
+		return
+
+	else if(inuse)
+		user << "Someone is already communing with the Wish Granter."
+		return
 
 	else
 		user << "The power of the Wish Granter have turned you into the superhero the station deserves. You are a masked vigilante, and answer to no man. Will you use your newfound strength to protect the innocent, or will you hunt the guilty?"
 
-
+		inuse = 1
 		var/wish
 		if(types.len == 1)
 			wish = pick(types)
 		else
 			wish = input("You want to become...","Wish") as null|anything in types
-		if(!wish) return
+		if(!wish)
+			inuse=0
+			return
 		types -= wish
 		var/mob/living/carbon/human/M = user
 		var/datum/superheroes/S = all_superheroes[wish]
 		if(S)
 			S.create(M)
+		inuse=0
 
 		//Remove the wishgranter or teleport it randomly on the station
 		if(!types.len)