fix: fix up kingress controller NPE (#1235)

pkg/ingress/kube/kingress/controller.go

@@ -163,7 +163,6 @@ func (c *controller) processNextWorkItem() bool {
 func (c *controller) onEvent(namespacedName types.NamespacedName) error {
 	event := model.EventUpdate
 	ing, err := c.ingressLister.Ingresses(namespacedName.Namespace).Get(namespacedName.Name)
-	ing.Status.InitializeConditions()
 	if err != nil {
 		if kerrors.IsNotFound(err) {
 			event = model.EventDelete
@@ -181,6 +180,8 @@ func (c *controller) onEvent(namespacedName types.NamespacedName) error {
 		return nil
 	}
 
+	ing.Status.InitializeConditions()
+
 	// we should check need process only when event is not delete,
 	// if it is delete event, and previously processed, we need to process too.
 	if event != model.EventDelete {