X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/1e1ddfac79fbcd052f199500a6493c7f79cb8462..107077d7fd6736711bf5cd980221723401d37c51:/src/src/auths/external.c

diff --git a/src/src/auths/external.c b/src/src/auths/external.c
index 7e7fca841..a89a50486 100644
--- a/src/src/auths/external.c
+++ b/src/src/auths/external.c
@@ -2,8 +2,10 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
+/* Copyright (c) The Exim Maintainers 2023 */
 /* Copyright (c) Jeremy Harris 2019-2020 */
 /* See the file NOTICE for conditions of use and distribution. */
+/* SPDX-License-Identifier: GPL-2.0-or-later */
 
 /* This file provides an Exim authenticator driver for
 a server to verify a client SSL certificate, using the EXTERNAL
@@ -103,7 +105,7 @@ if (expand_nmax == 0) 	/* skip if rxd data */
 if (ob->server_param2)
   {
   uschar * s = expand_string(ob->server_param2);
-  auth_vars[expand_nmax] = s;
+  auth_vars[expand_nmax = 1] = s;
   expand_nstring[++expand_nmax] = s;
   expand_nlength[expand_nmax] = Ustrlen(s);
   if (ob->server_param3)