media: fix possible NULL dereference in state_changed_cb()

1 files changed, 10 insertions, 4 deletions

diff --git a/libpurple/media/backend-fs2.c b/libpurple/media/backend-fs2.c
index 1e4e6638b4..38f6a62f6a 100644
--- a/libpurple/media/backend-fs2.c
+++ b/libpurple/media/backend-fs2.c
@@ -1565,10 +1565,16 @@ state_changed_cb(PurpleMedia *media, PurpleMediaState state,
 			gst_object_unref(session->session);
 			g_hash_table_remove(priv->sessions, session->id);
 
-			pad = gst_pad_get_peer(session->srcpad);
-			gst_element_remove_pad(GST_ELEMENT_PARENT(pad), pad);
-			gst_object_unref(pad);
-			gst_object_unref(session->srcpad);
+			if (session->srcpad) {
+				pad = gst_pad_get_peer(session->srcpad);
+				if (pad) {
+					gst_element_remove_pad(
+							GST_PAD_PARENT(pad),
+							pad);
+					gst_object_unref(pad);
+				}
+				gst_object_unref(session->srcpad);
+			}
 
 			remove_element(session->srcvalve);
 			remove_element(session->tee);