$NetBSD: patch-configure,v 1.5 2022/10/01 11:47:10 fox Exp $

Make the script portable.

--- configure.orig	2022-10-01 11:35:36.891958063 +0000
+++ configure
@@ -21777,7 +21777,7 @@ then
         then
                 as_fn_error $? "You need to enable both DTLS and TLSv1.3 to use DTLSv1.3" "$LINENO" 5
         fi
-        if test "x$ENABLED_SEND_HRR_COOKIE" == "xundefined"
+        if test "x$ENABLED_SEND_HRR_COOKIE" = "xundefined"
         then
                 { printf "%s\n" "$as_me:${as_lineno-$LINENO}: DTLSv1.3 is enabled, enabling HRR cookie" >&5
 printf "%s\n" "$as_me: DTLSv1.3 is enabled, enabling HRR cookie" >&6;}