message: COMMIT now does a rollback
diff: @@ -16,13 +16,9 @@ ALTER TABLE t1 ALTER c2 TYPE BOOLEAN;
  ----
  Cannot alter
  -statement error
  -COMMIT;
  -----
  -Current transaction is aborted
  -
  +# committing triggers a rollback
  statement ok
  -ROLLBACK
  +COMMIT;
  statement error
  ALTER TABLE t1 ALTER c2 SET NOT NULL;
  