From 269892f70bf357de6ad66ca89daa34b225ee9e37 Mon Sep 17 00:00:00 2001
From: Guus Sliepen <guus@tinc-vpn.org>
Date: Sat, 20 Oct 2007 11:21:44 +0000
Subject: [PATCH] Prevent double free() of a used challenge nonce.

---
 src/protocol_auth.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/protocol_auth.c b/src/protocol_auth.c
index 46bb6e64..0471932a 100644
--- a/src/protocol_auth.c
+++ b/src/protocol_auth.c
@@ -335,6 +335,7 @@ bool chal_reply_h(connection_t *c, char *request) {
 	 */
 
 	free(c->hischallenge);
+	c->hischallenge = NULL;
 	c->allow_request = ACK;
 
 	return send_ack(c);