Fixes a couple more bugs with the sheet snatcher (#22348)

Mostly in relation to it showing the incorrect amount in certain
circumstances.

code/game/objects/items/weapons/storage/bags.dm

@@ -195,7 +195,8 @@
 		if(S.material == sheet.material) // we are violating the amount limitation because these are not sane objects
 			sheet.amount += amount	// they should only be removed through procs in this file, which split them up.
 			S.amount -= amount
-			inserted = 1
+			sheet.update_icon()
+			inserted = TRUE
 			break
 
 	if(!inserted || !S.amount)
@@ -213,7 +214,7 @@
 	if(usr.s_active)
 		usr.s_active.show_to(usr)
 	update_icon()
-	return 1
+	return TRUE
 
 
 // Sets up numbered display to show the stack size of each stored mineral
@@ -239,17 +240,14 @@
 	src.slot_orient_objs(row_num, col_count, numbered_contents)
 	return
 
-
 // Modified quick_empty verb drops appropriate sized stacks
 /obj/item/storage/bag/sheetsnatcher/quick_empty()
 	var/location = get_turf(src)
 	for(var/obj/item/stack/material/S in contents)
 		while(S.amount)
-			var/obj/item/stack/material/N = new S.type(location)
-			var/stacksize = min(S.amount,N.max_amount)
-			N.amount = stacksize
+			var/stacksize = min(S.amount,S.max_amount)
+			new S.stacktype(location, stacksize)
 			S.amount -= stacksize
-			N.update_icon()
 		if(!S.amount)
 			qdel(S) // todo: there's probably something missing here
 	orient2hud(usr)
@@ -268,9 +266,11 @@
 	// -Sayu
 
 	if(S.amount > S.max_amount)
-		var/obj/item/stack/material/temp = new S.type(src)
+		var/obj/item/stack/material/temp = new S.stacktype(src)
 		temp.amount = S.amount - S.max_amount
 		S.amount = S.max_amount
+		S.update_icon()
+		temp.update_icon()
 
 	return ..(S,new_location)