Don't use different function scopes when parsing with temp zones

src/ast/scopes.h

Index: src/ast/scopes.h
diff --git a/src/ast/scopes.h b/src/ast/scopes.h
index 840c63944eb355ccfb5d4dbddee2c4a9128818f4..d3af5047092c382f70ef530e4b98a75f42266d93 100644
--- a/src/ast/scopes.h
+++ b/src/ast/scopes.h
@@ -415,6 +415,7 @@ class Scope: public ZoneObject {
   void set_is_debug_evaluate_scope() { is_debug_evaluate_scope_ = true; }
   bool is_debug_evaluate_scope() const { return is_debug_evaluate_scope_; }
 
+  bool is_lazily_parsed() const { return is_lazily_parsed_; }
   void set_is_lazily_parsed(bool is_lazily_parsed) {
     is_lazily_parsed_ = is_lazily_parsed;
   }
@@ -779,8 +780,7 @@ class DeclarationScope : public Scope {
   // records variables which cannot be resolved inside the Scope (we don't yet
   // know what they will resolve to since the outer Scopes are incomplete) and
   // migrates them into migrate_to.
-  void AnalyzePartially(DeclarationScope* migrate_to,
-                        AstNodeFactory* ast_node_factory);
+  void AnalyzePartially(AstNodeFactory* ast_node_factory);
 
   Handle<StringSet> CollectNonLocals(ParseInfo* info,
                                      Handle<StringSet> non_locals);
@@ -820,6 +820,7 @@ class DeclarationScope : public Scope {
     // Make sure we won't try to allocate the rest parameter. {params_} was
     // cleared above.
     has_rest_ = false;
+    unresolved_ = nullptr;
   }
 
  private: