fix 16316 debug check

test/cctest/test-global-handles.cc

 // Copyright 2013 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 312 matching lines @@
   v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
   EternalHandles* eternal_handles = isolate->eternal_handles();
 
   // Create a number of handles that will not be on a block boundary
   const int kArrayLength = 2048-1;
   int indices[kArrayLength];
   v8::Eternal<v8::Value> eternals[kArrayLength];
 
   CHECK_EQ(0, eternal_handles->NumberOfHandles());
   for (int i = 0; i < kArrayLength; i++) {
+    indices[i] = -1;
     HandleScope scope(isolate);
     v8::Local<v8::Object> object = v8::Object::New();
     object->Set(i, v8::Integer::New(i, v8_isolate));
     // Create with internal api
     eternal_handles->Create(
         isolate, *v8::Utils::OpenHandle(*object), &indices[i]);
     // Create with external api
     CHECK(!eternals[i].IsEmpty());
     eternals[i].Set(v8_isolate, object);
     CHECK(eternals[i].IsEmpty());
@@ skipping 25 matching lines @@
   {
     HandleScope scope(isolate);
     v8::Local<v8::Object> object = v8::Object::New();
     v8::Eternal<v8::Object> eternal(v8_isolate, object);
     CHECK(eternal.IsEmpty());
     CHECK(object == eternal.Get(v8_isolate));
   }
 
   CHECK_EQ(2*kArrayLength + 1, eternal_handles->NumberOfHandles());
 }