Fixed d8 shutdown.

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 1705 matching lines @@
     if (( options.interactive_shell || !options.script_executed )
         && !options.test_shell ) {
 #ifndef V8_SHARED
       if (!i::FLAG_debugger) {
         InstallUtilityScript(isolate);
       }
 #endif  // !V8_SHARED
       RunShell(isolate);
     }
   }
+  isolate->Dispose();
   V8::Dispose();
 
   OnExit();
 
   return result;
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif