I have downloaded a library off of github and have noticed that in the main singleton of the library there is a possible leak in this bit of code:

+(DDGameKitHelper*) sharedGameKitHelper
{
    @synchronized(self)
    {
        if (instanceOfGameKitHelper == nil)
        {
            [[DDGameKitHelper alloc] init];
        }

        return instanceOfGameKitHelper;
    }

    return nil;
}

Now obviously there is no release or autorelease anywhere so I must do it but how and in what way properly? I have looked at various Singleton design patterns on the Internet and they just assign, in this case, instanceOfGameKitHelper to the alloc and init line.

Anyway how would I properly fix this?

Thanks!