From f991e09319d55f35f19b486e3094992224ddf4c4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tim-Philipp=20M=C3=BCller?= <tim@centricular.com>
Date: Sat, 6 Aug 2016 16:15:33 +0100
Subject: [PATCH] dvdspu: don't crash if video frame could not be mapped

As might happen with e.g. vaapi and the test file from
https://bugzilla.gnome.org/show_bug.cgi?id=736227
---
 gst/dvdspu/gstdvdspu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gst/dvdspu/gstdvdspu.c b/gst/dvdspu/gstdvdspu.c
index 52d1038442..fb21748904 100644
--- a/gst/dvdspu/gstdvdspu.c
+++ b/gst/dvdspu/gstdvdspu.c
@@ -664,7 +664,9 @@ gstspu_render (GstDVDSpu * dvdspu, GstBuffer * buf)
 {
   GstVideoFrame frame;
 
-  gst_video_frame_map (&frame, &dvdspu->spu_state.info, buf, GST_MAP_READWRITE);
+  if (!gst_video_frame_map (&frame, &dvdspu->spu_state.info, buf,
+          GST_MAP_READWRITE))
+    return;
 
   switch (dvdspu->spu_input_type) {
     case SPU_INPUT_TYPE_VOBSUB: