avoid nil

fix https://github.com/chrislusf/seaweedfs/issues/452
8 years ago · 98d66a569b
1 changed files with 1 additions and 1 deletions
--- a/weed/server/master_grpc_server.go
+++ b/weed/server/master_grpc_server.go
@ -59,8 +59,8 @@ func (ms MasterServer) SendHeartbeat(stream pb.Seaweed_SendHeartbeatServer) erro
 			}

 		} else {
-			glog.V(0).Infof("lost volume server %s:%d", dn.Ip, dn.Port)
 			if dn != nil {
+				glog.V(0).Infof("lost volume server %s:%d", dn.Ip, dn.Port)
 				t.UnRegisterDataNode(dn)
 			}
 			return err