From c8d1e4ad5f221e1228bc4cbb7e1ac65589f315fc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wang=20Xin-yu=20=28=E7=8E=8B=E6=98=95=E5=AE=87=29?=
 <comicfans44@gmail.com>
Date: Wed, 20 Aug 2014 09:37:01 +0800
Subject: [PATCH] gl: check null before unref GstGLDisplay

---
 gst-libs/gst/gl/gstglutils.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gst-libs/gst/gl/gstglutils.c b/gst-libs/gst/gl/gstglutils.c
index 2e1b0dd4cf..c2ea06fab2 100644
--- a/gst-libs/gst/gl/gstglutils.c
+++ b/gst-libs/gst/gl/gstglutils.c
@@ -770,7 +770,9 @@ gst_gl_handle_set_context (GstElement * element, GstContext * context,
   if (replacement) {
     GstGLDisplay *old = *display;
     *display = replacement;
-    gst_object_unref (old);
+
+    if (old)
+      gst_object_unref (old);
   }
 
   return TRUE;