Fix cluster-fuzz found regression in d8 when deserializing ArrayBuffer

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 2133 matching lines @@
       }
       result = array;
       break;
     }
     case kSerializationTagObject: {
       int length = data.Read<int>(offset);
       Handle<Object> object = Object::New(isolate);
       for (int i = 0; i < length; ++i) {
         Local<Value> property_name;
         CHECK(DeserializeValue(isolate, data, offset).ToLocal(&property_name));
-        DCHECK(property_name->IsString());
         Local<Value> property_value;
         CHECK(DeserializeValue(isolate, data, offset).ToLocal(&property_value));
         object->Set(property_name, property_value);
       }
       result = object;
       break;
     }
     case kSerializationTagArrayBuffer: {
       int byte_length = data.Read<int>(offset);
       Handle<ArrayBuffer> array_buffer = ArrayBuffer::New(isolate, byte_length);
@@ skipping 233 matching lines @@
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif