fix corner case in `reduce_vars` (#3510)

fixes #3509

1 files changed, 1 insertions, 3 deletions

diff --git a/lib/scope.js b/lib/scope.js
index 131235f6..6e33365c 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -292,9 +292,7 @@ AST_Scope.DEFMETHOD("def_variable", function(symbol, init) {
     var def = this.variables.get(symbol.name);
     if (def) {
         def.orig.push(symbol);
-        if (def.init && (def.scope !== symbol.scope || def.init instanceof AST_Function)) {
-            def.init = init;
-        }
+        if (def.init instanceof AST_Function) def.init = init;
     } else {
         def = new SymbolDef(this, symbol, init);
         this.variables.set(symbol.name, def);