[events] Fix deadlock in TestExchangeBasic

Signed-off-by: Gaurav Singh <gaurav1086@gmail.com>

events/exchange/exchange_test.go

@@ -52,11 +52,8 @@ func TestExchangeBasic(t *testing.T) {
 	eventq2, errq2 := exchange.Subscribe(ctx2)
 
 	t.Log("publish")
-	var wg sync.WaitGroup
-	wg.Add(1)
 	errChan := make(chan error)
 	go func() {
-		defer wg.Done()
 		defer close(errChan)
 		for _, event := range testevents {
 			if err := exchange.Publish(ctx, "/test", event); err != nil {
@@ -69,7 +66,6 @@ func TestExchangeBasic(t *testing.T) {
 	}()
 
 	t.Log("waiting")
-	wg.Wait()
 	if err := <-errChan; err != nil {
 		t.Fatal(err)
 	}