pfctl: fix printing of wildcard anchors
PR: 297839
MFC after: 1 week
Obtained from: OpenBSD, henning <henning@openbsd.org>, 5b6657d4d8
Sponsored by: Rubicon Communications, LLC ("Netgate")
(cherry picked from commit 5de5140f06959f2724c626c7fab3e1c9187beefb)