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

src/parsing/parser-base.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PARSING_PARSER_BASE_H
 #define V8_PARSING_PARSER_BASE_H
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 #include "src/bailout-reason.h"
@@ skipping 3908 matching lines @@
            formal_parameters.scope
                ->AllowsLazyParsingWithoutUnresolvedVariables());
       // TODO(marja): consider lazy-parsing inner arrow functions too. is_this
       // handling in Scope::ResolveVariable needs to change.
       if (is_lazily_parsed) {
         Scanner::BookmarkScope bookmark(scanner());
         bookmark.Set();
         LazyParsingResult result = impl()->SkipLazyFunctionBody(
             &materialized_literal_count, &expected_property_count, false, true,
             CHECK_OK);
+        formal_parameters.scope->ResetAfterPreparsing();
 
         if (formal_parameters.materialized_literals_count > 0) {
           materialized_literal_count +=
               formal_parameters.materialized_literals_count;
         }
 
         if (result == kLazyParsingAborted) {
           bookmark.Apply();
           // Trigger eager (re-)parsing, just below this block.
           is_lazily_parsed = false;
@@ skipping 1381 matching lines @@
     has_seen_constructor_ = true;
     return;
   }
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_BASE_H