replace time.NewTicker().C with time.After

They are synonymous and time.After is much easier to read.

stats/stats.go

@@ -122,7 +122,7 @@ func New(cfg config.StatsConfig) *Stats {
 
 	if cfg.IncludeMem {
 		s.MemStatsWrapper = NewMemStatsWrapper(cfg.VerboseMem)
-		s.recordMemStats = time.NewTicker(cfg.MemUpdateInterval.Duration).C
+		s.recordMemStats = time.After(cfg.MemUpdateInterval.Duration)
 	}
 
 	s.flattened = flatjson.Flatten(s)

tracker/tracker.go

@@ -96,7 +96,7 @@ func (tkr *Tracker) purgeInactivePeers(purgeEmptyTorrents bool, threshold, inter
 		case <-tkr.shuttingDown:
 			return
 
-		case <-time.NewTicker(interval).C:
+		case <-time.After(interval):
 			before := time.Now().Add(-threshold)
 			glog.V(0).Infof("Purging peers with no announces since %s", before)
 

udp/udp.go

@@ -107,14 +107,12 @@ func (s *Server) Serve() {
 	s.wg.Add(1)
 	go func() {
 		defer s.wg.Done()
-		// Generate a new IV every hour.
-		t := time.NewTicker(time.Hour)
 		for {
 			select {
-			case <-t.C:
-				s.connIDGen.NewIV()
 			case <-s.closing:
 				return
+			case <-time.After(time.Hour):
+				s.connIDGen.NewIV()
 			}
 		}
 	}()