From abf66aa7a1cb4d09a967b715ab7f59fc62801aaf Mon Sep 17 00:00:00 2001
From: Matt Johnston <matt@ucc.asn.au>
Date: Wed, 18 Aug 2004 16:31:05 +0000
Subject: [PATCH] Don't try to remove non-eixtant listeners

--HG--
extra : convert_revision : 87058f74626cd6795ecd495cc22779618c70eaa8
---
 svr-x11fwd.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/svr-x11fwd.c b/svr-x11fwd.c
index a8d1cd5..75e94b8 100644
--- a/svr-x11fwd.c
+++ b/svr-x11fwd.c
@@ -171,8 +171,12 @@ void x11cleanup(struct ChanSess *chansess) {
 
 	m_free(chansess->x11authprot);
 	m_free(chansess->x11authcookie);
-	remove_listener(chansess->x11listener);
-	chansess->x11listener = NULL;
+
+	TRACE(("chansess %s", chansess));
+	if (chansess->x11listener != NULL) {
+		remove_listener(chansess->x11listener);
+		chansess->x11listener = NULL;
+	}
 }
 
 static const struct ChanType chan_x11 = {