fix Script bug + crafter

apis/chestAdapter18.lua

@@ -126,22 +126,9 @@ end
 function ChestAdapter:craftItems()
 end
 
-local function rpairs(t)
-  local tkeys = Util.keys(t)
-  local i = #tkeys
-  return function()
-    local key = tkeys[i]
-    local k,v = key, t[key]
-    i = i - 1
-    if v then
-      return k, v
-    end
-  end
-end
-
 function ChestAdapter:provide(item, qty, slot, direction)
   local stacks = self.list()
-  for key,stack in rpairs(stacks) do
+  for key,stack in Util.rpairs(stacks) do
     if stack.name == item.name and stack.damage == item.damage then
       local amount = math.min(qty, stack.count)
       if amount > 0 then