Merge pull request #7242 from Citadel-Station-13/kevinz000-patch-16

[s] Fixes a bug

code/game/machinery/pipe/pipe_dispenser.dm

@@ -42,6 +42,8 @@
 	if(href_list["makepipe"])
 		if(wait < world.time)
 			var/p_type = text2path(href_list["makepipe"])
+			if (!verify_recipe(GLOB.atmos_pipe_recipes, p_type))
+				return
 			var/p_dir = text2num(href_list["dir"])
 			var/obj/item/pipe/P = new (loc, p_type, p_dir)
 			P.setPipingLayer(piping_layer)
@@ -66,6 +68,15 @@
 	else
 		return ..()
 
+/obj/machinery/pipedispenser/proc/verify_recipe(recipes, path)
+	for(var/category in recipes)
+		var/list/cat_recipes = recipes[category]
+		for(var/i in cat_recipes)
+			var/datum/pipe_info/info = i
+			if (path == info.id)
+				return TRUE
+	return FALSE
+
 /obj/machinery/pipedispenser/wrench_act(mob/living/user, obj/item/I)
 	if(default_unfasten_wrench(user, I, 40))
 		user << browse(null, "window=pipedispenser")
@@ -124,6 +135,8 @@
 	if(href_list["dmake"])
 		if(wait < world.time)
 			var/p_type = text2path(href_list["dmake"])
+			if (!verify_recipe(GLOB.disposal_pipe_recipes, p_type))
+				return
 			var/obj/structure/disposalconstruct/C = new (loc, p_type)
 
 			if(!C.can_place())