fix dumpSqls is nil

liuxiaolong

2020-05-14 f415b40162623cef084caf6c18ed3e595a5c6373

 main.go

@@ -22,7 +22,7 @@
   }
   Leave()
   InitCluster()
   InitAgent("node2")
   //InitAgent("node2")
   SyncInit("c4d03d5d-64c3-4941-bb53-152277a3271a","123455","node2","", "")
   //JoinByNodeAddrs("192.168.222.103:30190")
   //JoinByNodeAddrs("192.168.5.22:30190")