Fix the exception order by remember JS handler in an external handler.

src/api.cc

 // Copyright 2007-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1063 matching lines @@
 
 
 // --- E x c e p t i o n s ---
 
 
 v8::TryCatch::TryCatch()
     : next_(i::Top::try_catch_handler()),
       exception_(i::Heap::the_hole_value()),
       message_(i::Smi::FromInt(0)),
       is_verbose_(false),
-      capture_message_(true) {
+      capture_message_(true),
+      js_handler_(NULL) {
   i::Top::RegisterTryCatchHandler(this);
 }
 
 
 v8::TryCatch::~TryCatch() {
   i::Top::UnregisterTryCatchHandler(this);
 }
 
 
 bool v8::TryCatch::HasCaught() const {
@@ skipping 1874 matching lines @@
       reinterpret_cast<HandleScopeImplementer*>(storage);
   List<void**>* blocks_of_archived_thread = thread_local->Blocks();
   ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
       &thread_local->handle_scope_data_;
   Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
 
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal