Fix null check

[ZITADOPER-1]

src/internal/controller/zitadelcluster_controller.go

@@ -590,7 +590,7 @@ func (r *ZitadelClusterReconciler) reconcileInitialHumanUser(ctx context.Context
 		}
 	}
 	var userid string
-	if adminUser.User == nil {
+	if adminUser == nil {
 		resp, err := managementClient.AddHumanUser(middleware.SetOrgID(ctx, org.Org.Id), &management.AddHumanUserRequest{
 			UserName: admin.AccountName,
 			Profile: &management.AddHumanUserRequest_Profile{