Does rpki-client need to unveil(NULL, NULL)?

[George Brown]

After pledge is immediately called without the unveil promise so this
seems redundant.

diff --git a/usr.sbin/rpki-client/main.c b/usr.sbin/rpki-client/main.c
index f05ec1c5837..53ee4223371 100644
--- a/usr.sbin/rpki-client/main.c
+++ b/usr.sbin/rpki-client/main.c
@@ -1498,8 +1498,6 @@ main(int argc, char *argv[])
                /* Only allow access to BASE_DIR. */
                if (unveil(BASE_DIR, "r") == -1)
                        err(1, "%s: unveil", BASE_DIR);
-               if (unveil(NULL, NULL) == -1)
-                       err(1, "unveil");
                if (pledge("stdio rpath", NULL) == -1)
                        err(1, "pledge");
                proc_parser(fd[0], force);