From 3991afe68b7c731f02c3e61f6e31b56507a8c595 Mon Sep 17 00:00:00 2001
From: Matthew Waters <matthew@centricular.com>
Date: Fri, 27 Aug 2021 13:51:07 +1000
Subject: [PATCH] element: NULL the lists of contexts in dispose()

If dispose() is called more than once, we may double unref the list of
GstContext's.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/878>
---
 gst/gstelement.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gst/gstelement.c b/gst/gstelement.c
index 8a908a1a5a..25f2a0fd6e 100644
--- a/gst/gstelement.c
+++ b/gst/gstelement.c
@@ -3291,6 +3291,7 @@ gst_element_dispose (GObject * object)
   gst_object_replace ((GstObject **) clock_p, NULL);
   gst_object_replace ((GstObject **) bus_p, NULL);
   g_list_free_full (element->contexts, (GDestroyNotify) gst_context_unref);
+  element->contexts = NULL;
   GST_OBJECT_UNLOCK (element);
 
   GST_CAT_INFO_OBJECT (GST_CAT_REFCOUNTING, element, "%p parent class dispose",