From c70fb6038448cf072cfa96cee78eaa55aa99c0fa Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Fri, 26 May 2017 03:58:35 +0800
Subject: [PATCH] clean up `lib/scope.js` (#2003)

fixes #2004
---
 lib/scope.js | 22 ++++------------------
 1 file changed, 4 insertions(+), 18 deletions(-)

diff --git a/lib/scope.js b/lib/scope.js
index 14ffb46f..8bc96072 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -183,16 +183,8 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     self.walk(tw);
 
     // pass 2: find back references and eval
-    var func = null;
-    var globals = self.globals = new Dictionary();
+    self.globals = new Dictionary();
     var tw = new TreeWalker(function(node, descend){
-        if (node instanceof AST_Lambda) {
-            var prev_func = func;
-            func = node;
-            descend();
-            func = prev_func;
-            return true;
-        }
         if (node instanceof AST_LoopControl && node.label) {
             node.label.thedef.references.push(node);
             return true;
@@ -361,9 +353,7 @@ AST_Symbol.DEFMETHOD("unmangleable", function(options){
 });
 
 // labels are always mangleable
-AST_Label.DEFMETHOD("unmangleable", function(){
-    return false;
-});
+AST_Label.DEFMETHOD("unmangleable", return_false);
 
 AST_Symbol.DEFMETHOD("unreferenced", function(){
     return this.definition().references.length == 0
@@ -374,13 +364,9 @@ AST_Symbol.DEFMETHOD("undeclared", function(){
     return this.definition().undeclared;
 });
 
-AST_LabelRef.DEFMETHOD("undeclared", function(){
-    return false;
-});
+AST_LabelRef.DEFMETHOD("undeclared", return_false);
 
-AST_Label.DEFMETHOD("undeclared", function(){
-    return false;
-});
+AST_Label.DEFMETHOD("undeclared", return_false);
 
 AST_Symbol.DEFMETHOD("definition", function(){
     return this.thedef;
-- 
2.34.1