$NetBSD: patch-dist_validate_s__chk__message__id,v 1.1 2024/11/29 12:18:18 jperkin Exp $

Fix check-portability.

--- dist/validate/s_chk_message_id.orig	2024-11-29 12:08:57.878260346 +0000
+++ dist/validate/s_chk_message_id
@@ -29,7 +29,7 @@ do
 
 	# "DB_STR(id" and "DB_STR_A(id" are from macros defination, 
 	# should not be regarded as invalid message id.
-	if [ "$curnum" == "id" ]; then
+	if [ "$curnum" = "id" ]; then
 		continue
 	fi
 
@@ -44,8 +44,8 @@ do
 	fi
 	
 	# There shouldn't be duplicate message id.
-	if [ "$curnum" == "$lastnum" ]; then
-		if [ "$curnum" == "$rep_dup_msg_id" ]; then
+	if [ "$curnum" = "$lastnum" ]; then
+		if [ "$curnum" = "$rep_dup_msg_id" ]; then
 			echo "[EXPECTED] duplicate message id: $curnum"
 		else
 			echo "[ERROR] duplicate message id: $curnum"