VM: Fix crash parsing metadata with a closure as a const constructor argument.

runtime/vm/parser.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/parser.h"
 #include "vm/flags.h"
 
 #ifndef DART_PRECOMPILED
 
 #include "lib/invocation_mirror.h"
@@ skipping 1047 matching lines @@
         false,  // is_abstract
         false,  // is_external
         false,  // is_native
         Object::Handle(zone, meta_data.RawOwner()),
         token_pos));
     fake_function.set_is_debuggable(false);
     ParsedFunction* parsed_function =
         new ParsedFunction(thread, fake_function);
     Parser parser(script, parsed_function, token_pos);
     parser.set_current_class(owner_class);
+    parser.OpenFunctionBlock(fake_function);
 
     RawObject* metadata = parser.EvaluateMetadata();
     return metadata;
   } else {
     Thread* thread = Thread::Current();
     Isolate* isolate = thread->isolate();
     StackZone stack_zone(thread);
     Zone* zone = stack_zone.GetZone();
     Error& error = Error::Handle(zone);
     error = isolate->object_store()->sticky_error();
@@ skipping 13401 matching lines @@
     const ArgumentListNode& function_args,
     const LocalVariable* temp_for_last_arg,
     bool is_super_invocation) {
   UNREACHABLE();
   return NULL;
 }
 
 }  // namespace dart
 
 #endif  // DART_PRECOMPILED