$NetBSD: patch-configure,v 1.1 2019/10/24 22:06:09 nia Exp $

test(1) portability

--- configure.orig	2017-07-14 09:26:20.000000000 +0000
+++ configure
@@ -19789,7 +19789,7 @@ else
 $as_echo "no" >&6; }
 fi
 
-if test "$have_iso_code_639" == "yes" || test "$have_iso_code_3166" == "yes" || test "$have_iso_code_15924" == "yes" ; then
+if test "$have_iso_code_639" = "yes" || test "$have_iso_code_3166" = "yes" || test "$have_iso_code_15924" = "yes" ; then
 
 $as_echo "#define HAVE_ISO_CODES 1" >>confdefs.h