From 64e14eaff5912b592565130ca116251a1028bfe6 Mon Sep 17 00:00:00 2001
From: Nicolas Viennot <nicolas@viennot.biz>
Date: Sat, 23 Jan 2016 00:52:35 -0500
Subject: [PATCH] Avoid crashes when the ssh connction dies

We might want to deal with reconnections soon
---
 tmate-ssh-client.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tmate-ssh-client.c b/tmate-ssh-client.c
index 691a49ce..cd3a71b0 100644
--- a/tmate-ssh-client.c
+++ b/tmate-ssh-client.c
@@ -49,6 +49,9 @@ static void on_encoder_write(void *userdata, struct evbuffer *buffer)
 	ssize_t len, written;
 	unsigned char *buf;
 
+	if (!client->channel)
+		return;
+
 	for(;;) {
 		len = evbuffer_get_length(buffer);
 		if (!len)