Fix nil pointer dereference (#429)

Signed-off-by: Kevin Su <[email protected]>

ray-operator/controllers/ray/rayjob_controller.go

@@ -190,8 +190,8 @@ func (r *RayJobReconciler) Reconcile(ctx context.Context, request ctrl.Request)
 	// Let's use rayJobInstance.Status.JobStatus to make sure we only delete cluster after the CR is updated.
 	if isJobSucceedOrFailed(rayJobInstance.Status.JobStatus) && rayJobInstance.Status.JobDeploymentStatus == rayv1alpha1.JobDeploymentStatusRunning {
 		if rayJobInstance.Spec.ShutdownAfterJobFinishes {
-			r.Log.V(3).Info("TTLSecondsAfterSetting", "end_time", rayJobInstance.Status.EndTime.Time, "now", time.Now(), "ttl", *rayJobInstance.Spec.TTLSecondsAfterFinished)
 			if rayJobInstance.Spec.TTLSecondsAfterFinished != nil {
+				r.Log.V(3).Info("TTLSecondsAfterSetting", "end_time", rayJobInstance.Status.EndTime.Time, "now", time.Now(), "ttl", *rayJobInstance.Spec.TTLSecondsAfterFinished)
 				ttlDuration := time.Duration(*rayJobInstance.Spec.TTLSecondsAfterFinished) * time.Second
 				if rayJobInstance.Status.EndTime.Time.Add(ttlDuration).After(time.Now()) {
 					// time.Until prints duration until target time. We add additional 2 seconds to make sure we have buffer and requeueAfter is not 0.