Fix items attempting to directly access/touch amount on stack var.

PR https://github.com/VOREStation/VOREStation/pull/11454 set var amount on stacks to private, necessitating using get_amount() to read the amount currently left in a stack, rather than just directly accessing the var.

code/game/machinery/feeder.dm

@@ -67,8 +67,7 @@
 	if(default_deconstruction_screwdriver(user, W))
 		if(do_after(user, 15))
 			to_chat(user, "You deconstruct the feeder.")
-			var/obj/item/stack/material/plastic/A = new /obj/item/stack/material/plastic(src.loc)
-			A.amount = 4
+			new /obj/item/stack/material/plastic(src.loc, 4)
 			if(beaker)
 				beaker.loc = get_turf(src)
 				beaker = null

code/game/machinery/telecrystal_storage_ch.dm

@@ -25,12 +25,12 @@
 	var/hasRecord = FALSE	//Check to see if this passes or not.
 	for(var/datum/stored_item/I in item_records)
 		if((O.type == I.item_path) && (O.name == I.item_name))
-			mod_amount(I,O.amount)
+			mod_amount(I,O.get_amount())
 			hasRecord = TRUE
 			qdel(O)
 			break
 	if(!hasRecord)
-		var/datum/stored_item/item = new/datum/stored_item(src,O.type,O.name,O.amount)
+		var/datum/stored_item/item = new/datum/stored_item(src,O.type,O.name,O.get_amount())
 		item_records.Add(item)
 		qdel(O)
 

code/game/mecha/mecha_construction_paths_ch.dm

@@ -142,8 +142,7 @@
 				holder.icon_state = "scarab_wire2"
 			else
 				user.visible_message("[user] removes the wiring from [holder].", "You remove the wiring from [holder].")
-				var/obj/item/stack/cable_coil/coil = new /obj/item/stack/cable_coil(get_turf(holder))
-				coil.amount = 4
+				new /obj/item/stack/cable_coil(get_turf(holder), 4)
 				holder.icon_state = "scarab_chassis_complete"
 		if(16)
 			if(diff==FORWARD)
@@ -238,8 +237,7 @@
 				holder.icon_state = "scarab_chip5"
 			else
 				user.visible_message("[user] pries internal armor layer from [holder].", "You prie internal armor layer from [holder].")
-				var/obj/item/stack/material/steel/MS = new /obj/item/stack/material/steel(get_turf(holder))
-				MS.amount = 5
+				new /obj/item/stack/material/steel(get_turf(holder), 5)
 				holder.icon_state = "scarab_chip5"
 		if(4)
 			if(diff==FORWARD)
@@ -261,8 +259,7 @@
 				holder.icon_state = "scarab_weld2"
 			else
 				user.visible_message("[user] pries the external armor layer from [holder].", "You pry external armor layer from [holder].")
-				var/obj/item/stack/material/plasteel/MS = new /obj/item/stack/material/plasteel(get_turf(holder))
-				MS.amount = 5
+				new /obj/item/stack/material/plasteel(get_turf(holder), 5)
 				holder.icon_state = "scarab_weld1"
 		if(1)
 			if(diff==FORWARD)

code/modules/power/fusion/fuel_assembly/fuel_assembly_ch.dm

@@ -31,7 +31,7 @@
 	..()
 	var/obj/item/stack/material/lead/M = I
 	if(istype(M))
-		if(M.amount>5)
+		if(M.get_amount() > 5)
 			to_chat(user,"<span class='notice'>You add a lead shell to the blitz rod.</span>")
 			qdel(src)
 			var/obj/item/weapon/fuel_assembly/blitz/shielded/rod = new(get_turf(user))