Fix bogus extra arguments to query_safe in test

Fix bogus extra arguments to query_safe in test

The test seemed to incorrectly think that query_safe() takes an
argument that describes what the query does, similar to e.g.
command_ok(). Until commit bd8d9c9bdf the extra arguments were
harmless and were just ignored, but when commit bd8d9c9bdf introduced
a new optional argument to query_safe(), the extra arguments started
clashing with that, causing the test to fail.

Backpatch to v17, that's the oldest branch where the test exists. The
extra arguments didn't cause any trouble on the older branches, but
they were clearly bogus anyway.