test: avoid false failure on OpenBSD

* tests/numfmt/numfmt.pl: Use standard getopt error map,
needed on OpenBSD.
Reported by Bruno Haible.

diff --git a/tests/numfmt/numfmt.pl b/tests/numfmt/numfmt.pl
index c6ed3f0736dfd339399be31e1525c5dc94c792e3..1c64319e40d9f21652727ff7c74d2d4f49e5f760 100755 (executable)
--- a/tests/numfmt/numfmt.pl
+++ b/tests/numfmt/numfmt.pl
@@ -894,7 +894,8 @@ my @Tests =
      # A leading '-9...' must be treated as an invalid short option, not as
      # a negative positional argument.
      ['neg-arg-not-option', '--to=iec -9923868',
-             {ERR => "$prog: invalid option -- '9'\n" .
+             {ERR_SUBST => q!s/'9'/9/;s/unknown/invalid/!},
+             {ERR => "$prog: invalid option -- 9\n" .
                      "Try '$prog --help' for more information.\n"},
              {EXIT => 1}],