[MIRROR] Sideports a couple of init unit tests from Neb.

code/modules/mining/machine_stacking.dm

@@ -87,11 +87,11 @@
 /obj/machinery/mineral/stacking_machine/New()
 	..()
 
-	for(var/stacktype in typesof(/obj/item/stack/material)-/obj/item/stack/material)
-		var/obj/item/stack/S = new stacktype(src)
-		stack_storage[S.name] = 0
-		stack_paths[S.name] = stacktype
-		qdel(S)
+	for(var/stacktype in subtypesof(/obj/item/stack/material))
+		var/obj/item/stack/S = stacktype
+		var/s_name = initial(S.name)
+		stack_storage[s_name] = 0
+		stack_paths[s_name] = stacktype
 
 	stack_storage["glass"] = 0
 	stack_paths["glass"] = /obj/item/stack/material/glass

code/modules/mining/mine_items.dm

@@ -158,9 +158,10 @@
 	var/upright = 0
 	var/base_state
 
-/obj/item/stack/flag/New()
-	..()
+/obj/item/stack/flag/Initialize()
+	. = ..()
 	base_state = icon_state
+	update_icon()
 
 /obj/item/stack/flag/blue
 	name = "blue flags"

code/modules/mining/ore.dm

@@ -114,7 +114,7 @@
 	material = null
 
 /obj/item/weapon/ore/Initialize()
-	..()
+	. = ..()
 	randpixel_xy()
 
 /obj/item/weapon/ore/attackby(obj/item/weapon/W as obj, mob/user as mob)