$NetBSD: patch-Makefile.in,v 1.1 2020/03/13 11:10:17 tnn Exp $

silence double brackets warning

--- Makefile.in.orig	2020-03-13 10:53:38.791153946 +0000
+++ Makefile.in
@@ -857,8 +857,8 @@ sign-release: iso-codes-$(VERSION).tar.x
 
 .PHONY: upload
 upload:
-	@if [[ -f "iso-codes-$(VERSION).tar.xz" ]] \
-	&& [[ -f "iso-codes-$(VERSION).tar.xz.sig" ]]; then \
+	@if [ -f "iso-codes-$(VERSION).tar.xz" ] \
+	&& [ -f "iso-codes-$(VERSION).tar.xz.sig" ]; then \
 		scp iso-codes-$(VERSION).tar.* \
 		alioth.debian.org:/srv/home/groups/pkg-isocodes/htdocs/downloads; \
 	fi