From 9d6411b7d2a859ebc7a8f1bf9c477038ede28747 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20=C3=96man?= <andreas@lonelycoder.com>
Date: Fri, 2 May 2008 10:00:38 +0000
Subject: [PATCH] Don't crash if transport is not yet mapped to a channel

---
 teletext.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/teletext.c b/teletext.c
index b53e5559..d37f206a 100644
--- a/teletext.c
+++ b/teletext.c
@@ -184,6 +184,9 @@ tt_decode_line(th_transport_t *t, uint8_t *buf)
   tt_decoder_t *ttd = &ch->ch_tt;
   tt_page_t *ttp;
 
+  if(ch == NULL)
+    return; /* Not mapped to a channel, do not do anything */
+
   mpag = ham_decode(buf[0], buf[1]);
 
   magidx = mpag & 7;