(sysutils/webmin) Add missing patch, sorry tks joerg@

sysutils/webmin/patches/patch-update-from-repo_sh

@@ -0,0 +1,14 @@
+$NetBSD: patch-update-from-repo_sh,v 1.1 2020/05/05 23:57:40 mef Exp $
+
+
+--- update-from-repo.sh.orig	2020-04-27 00:50:35.004969492 +0900
++++ update-from-repo.sh	2020-04-27 00:50:44.003907543 +0900
+@@ -261,7 +261,7 @@ fi
+ # really update?
+ REPLY="y"
+ 
+-if [ "${ASK}" == "YES" ] ; then
++if [ "${ASK}" = "YES" ] ; then
+     if [[ "$1" != "-release"* ]] ; then
+         echo -e "${RED}Warning:${ORANGE} you are updating from DEV repository${NC} ${HOST}/${REPO}${BRANCH} ${ORANGE}, this may break your installation!${NC}"
+     fi