Make QTimer::remainingTime() work outside of its thread

Perhaps I'm abusing the API slightly, but I have a use case for querying QTimer::remainingTime() from another thread, which currently doesn't work because the implementation doesn't pass thread() into QAbstractEventDispatcher::instance():

int QTimer::remainingTime() const
{
    if (id != INV_TIMER) {
        return QAbstractEventDispatcher::instance()->remainingTime(id);
    }

    return -1;
} 

I'm currently doing a workaround like to get what I need:

if (my_timer.isActive())
    return QAbstractEventDispatcher::instance(my_timer.thread())->remainingTime(my_timer_.timerId());
else
    return -1;

and I understand there are race-conditions here when called outside of the timer thread but as long as the user knows what they are doing and are ready to handle the -1 cases I think it would be useful for QTimer::remainingTime() to do this for us?