Remove needless nesting on Stack

init.lua

@@ -111,28 +111,26 @@ local function Set(t) -- {{{3
 end
 
 local function Stack() -- {{{3
- return (function()
- local stack = {}
- local head = 0
- return {
- head = function()
- return stack[head]
- end,
-
- push = function(e)
- head = head + 1
- stack[head] = e
- end,
-
- pop = function()
- if head == 0 then return nil end
- local e = stack[head]
- stack[head] = nil
- head = head - 1
- return e
- end
- }
- end)()
+ local stack = {}
+ local head = 0
+ return {
+ head = function()
+ return stack[head]
+ end,
+
+ push = function(e)
+ head = head + 1
+ stack[head] = e
+ end,
+
+ pop = function()
+ if head == 0 then return nil end
+ local e = stack[head]
+ stack[head] = nil
+ head = head - 1
+ return e
+ end
+ }
 end
 
 -- MODULES -- {{{2