This was broken by a silly mistake in
e717a9a1.
Reported-by: Jeff Janes <jeff.janes@gmail.com>
Author: Justin Pryzby <pryzby@telsasoft.com>
Discussion: https://www.postgresql.org/message-id/CAMkU=1zKGWEJdBbYKw7Tn7cJmYR_UjgdcXTPDqJj=dNwCETBCQ@mail.gmail.com