fix center handle ssn after node restart.

lichao

2021-04-26 150e192a7ddf19783a0f4a81b87d270c0812277a

 src/bh_api.cpp

@@ -10,7 +10,7 @@
{
TopicNode &ProcNode()
{
   static bool init_bind_msg_shm = MsgI::BindShm(BHomeShm());
   static bool init = GlobalInit(BHomeShm());
   static TopicNode node(BHomeShm());
   return node;
}