Fix the building issue when protobuf is enabled.

Fu Juntang

2021-09-01 387fe1dbfffdc3d73cf46f2c054f4d25543c8523

 src/queue/array_lock_free_queue.h

@@ -102,6 +102,7 @@
template<typename ELEM_T, typename Allocator>
ArrayLockFreeQueue<ELEM_T, Allocator>::~ArrayLockFreeQueue() {
  // std::cout << "destroy ArrayLockFreeQueue\n";
  
  Allocator::deallocate(m_theQueue);

}