Code comment optimization

weed/wdclient/masterclient.go

@@ -127,22 +127,21 @@ func (mc *MasterClient) tryConnectToMaster(master pb.ServerAddress) (nextHintedL
 		}
 		glog.V(1).Infof("%s.%s masterClient Connected to %v", mc.FilerGroup, mc.clientType, master)
 
-		//reset vidMap only when masterClient successfully connected to new leader
 		resp, err := stream.Recv()
 		if err != nil {
 			glog.V(0).Infof("%s.%s masterClient failed to receive from %s: %v", mc.FilerGroup, mc.clientType, master, err)
 			stats.MasterClientConnectCounter.WithLabelValues(stats.FailedToReceive).Inc()
 			return err
 		}
-		if resp.VolumeLocation != nil {
-			//immediately check whether it is the leader
-			if resp.VolumeLocation.Leader != "" {
+
+		// check if it is the leader to determine whether to reset the vidMap
+		if resp.VolumeLocation != nil && resp.VolumeLocation.Leader != "" {
 			glog.V(0).Infof("redirected to leader %v", resp.VolumeLocation.Leader)
 			nextHintedLeader = pb.ServerAddress(resp.VolumeLocation.Leader)
 			stats.MasterClientConnectCounter.WithLabelValues(stats.RedirectedToleader).Inc()
 			return nil
 		}
-		}
+
 		mc.currentMaster = master
 		mc.vidMap = newVidMap("")