Only descend twice after drop_unused if it's the same node type.

Fix #345
2013-11-08 11:57:17 +02:00
parent eab99a1c3d
commit 7d11b96f48
1 changed files with 3 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -85,13 +85,14 @@ merge(Compressor.prototype, {
    },
    before: function(node, descend, in_list) {
        if (node._squeezed) return node;
+        var was_scope = false;
        if (node instanceof AST_Scope) {
-            //node.drop_unused(this);
            node = node.hoist_declarations(this);
+            was_scope = true;
        }
        descend(node, this);
        node = node.optimize(this);
-        if (node instanceof AST_Scope) {
+        if (was_scope && node instanceof AST_Scope) {
            node.drop_unused(this);
            descend(node, this);
        }