From cff42b2b408ca07b93da92e11bdbb1aa30c275b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Sat, 12 Nov 2016 10:38:04 +0200
Subject: [PATCH] hlsdemux: Fix NULL pointer dereference when checking if there
 is a next fragment

Thanks to Aleksandr <tumaleksandr@yandex.ua> for reporting and
suggesting the fix.

https://bugzilla.gnome.org/show_bug.cgi?id=774287
---
 ext/hls/m3u8.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ext/hls/m3u8.c b/ext/hls/m3u8.c
index bdb4acf882..2f22c13bcb 100644
--- a/ext/hls/m3u8.c
+++ b/ext/hls/m3u8.c
@@ -711,7 +711,7 @@ gst_m3u8_has_next_fragment (GstM3U8 * m3u8, gboolean forward)
     cur = m3u8_find_next_fragment (m3u8, forward);
   }
 
-  have_next = (forward && cur->next) || (!forward && cur->prev);
+  have_next = cur && ((forward && cur->next) || (!forward && cur->prev));
 
   GST_M3U8_UNLOCK (m3u8);