Merge pull request #5269 from k8s-infra-cherrypick-robot/cherry-pick-…

…5266-to-release-1.28

[release-1.28] fix: azure_loadbalancer.go: don't use service.Name, when service is nil

pkg/provider/azure_loadbalancer.go

@@ -251,7 +251,7 @@ func (az *Cloud) UpdateLoadBalancer(ctx context.Context, clusterName string, ser
 	}
 	if !serviceExists {
 		isOperationSucceeded = true
-		klog.V(2).Infof("UpdateLoadBalancer: skipping service %s because service is going to be deleted", service.Name)
+		klog.V(2).Infof("UpdateLoadBalancer: skipping service %s because service is going to be deleted", serviceName)
 		return nil
 	}