Remove remaining HandleScope::Close usage

src/debug.cc

Index: src/debug.cc
diff --git a/src/debug.cc b/src/debug.cc
index 23495c8e5c630862fdeb19216a6812afae7a4f30..25be003f707c06a068ec7f84813e0b8eb3790e24 100644
--- a/src/debug.cc
+++ b/src/debug.cc
@@ -3640,7 +3640,7 @@ v8::Handle<v8::Object> MessageImpl::GetEventData() const {
 
 
 v8::Handle<v8::String> MessageImpl::GetJSON() const {
-  v8::HandleScope scope(
+  v8::EscapableHandleScope scope(
       reinterpret_cast<v8::Isolate*>(event_data_->GetIsolate()));
 
   if (IsEvent()) {
@@ -3656,7 +3656,7 @@ v8::Handle<v8::String> MessageImpl::GetJSON() const {
     if (caught_exception || !json->IsString()) {
       return v8::Handle<v8::String>();
     }
-    return scope.Close(v8::Utils::ToLocal(Handle<String>::cast(json)));
+    return scope.Escape(v8::Utils::ToLocal(Handle<String>::cast(json)));
   } else {
     return v8::Utils::ToLocal(response_json_);
   }