center remove old shm on start.

lichao

2021-06-03 d89ff0ad812cdf178b911843bc3e8c04b2f00845

 src/shm_msg_queue.h

@@ -29,7 +29,7 @@
{
public:
   typedef int64_t RawData;
   typedef ShmObject<SharedQ63> Shmq;
   typedef NamedShmObject<SharedQ63> Shmq;
   typedef Shmq::Data Queue;
   typedef Shmq::ShmType ShmType;
   typedef uint64_t MQId;