Fix cluster-fuzz found regression in d8 Workers.

src/d8.cc

 // 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.
 
 
 // Defined when linking against shared lib on Windows.
 #if defined(USING_V8_SHARED) && !defined(V8_SHARED)
 #define V8_SHARED
 #endif
 
@@ skipping 1688 matching lines @@
         Handle<Function> postmessage_fun;
         if (postmessage_fun_template->GetFunction(context)
                 .ToLocal(&postmessage_fun)) {
           global->Set(String::NewFromUtf8(isolate, "postMessage"),
                       postmessage_fun);
         }
 
         // First run the script
         Handle<String> file_name = String::NewFromUtf8(isolate, "unnamed");
         Handle<String> source = String::NewFromUtf8(isolate, script_);
-        if (Shell::ExecuteString(isolate, source, file_name, true, true)) {
+        if (Shell::ExecuteString(isolate, source, file_name, false, true)) {
           // Get the message handler
           Handle<Value> onmessage =
               global->Get(String::NewFromUtf8(isolate, "onmessage"));
           if (onmessage->IsFunction()) {
             Handle<Function> onmessage_fun = Handle<Function>::Cast(onmessage);
             // Now wait for messages
             bool done = false;
             while (!done) {
               in_semaphore_.Wait();
               SerializationData* data;
@@ skipping 708 matching lines @@
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif