Fix possibly incorrect usage of conversion

common/repeat_timer.go

@@ -36,8 +36,7 @@ func (t *defaultTicker) Chan() <-chan time.Time {
 
 // Implements Ticker
 func (t *defaultTicker) Stop() {
-	tt := time.Ticker(*t)
-	tt.Stop()
+	((*time.Ticker)(t)).Stop()
 }
 
 //----------------------------------------

common/repeat_timer_test.go

@@ -31,7 +31,7 @@ func TestRepeat(t *testing.T) {
 		for i := 0; i < cnt; i++ {
 			timeout := time.After(time.Second * 2)
 			select {
-			case _ = <-rt.Chan():
+			case <-rt.Chan():
 			case <-timeout:
 				t.Fatal("expected RepeatTimer to fire")
 			}