fix memory leak

liuxiaolong

2021-07-20 232227035c8d6a31eaaf193863cbadda949c08fd

 src/defs.cpp

@@ -152,7 +152,8 @@
      }
   }
   auto &mq = GetCenterInfo(shm)->mq_sender_;
   store.emplace_back(&shm, new ShmSocket(mq.offset_, shm, mq.id_));
   store.emplace_back(&shm, std::make_shared<ShmSocket>(mq.offset_, shm, mq.id_));
   // store.emplace_back(&shm, new ShmSocket(mq.offset_, shm, mq.id_));
   local_cache = store.back();
   return *local_cache.second;
}