Method dequeue

extern/libcds/test/stress/queue/std_queue.h:36–45

        }

        bool dequeue( T& data )
        {
            std::unique_lock<Lock> a(m_Locker);
            if ( base_class::empty())
                return false;

            data = base_class::front();
            base_class::pop();
            return true;
        }

        bool pop( T& data )
        {