bluray: fix abort() when empty overlay is closed

HDMV titles can construct empty overlay with invisible buttons to enable navigation.
This is used in ex. photo galleries (to flip image) and with audio navigation ("spoken menu").

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

diff --git a/modules/access/bluray.c b/modules/access/bluray.c
index bc4c8e9a1b115973f9d18ddf043c96fc8dd59029..1d34060bacb20a8c50e820c278c583e6056c68ce 100644 (file)
--- a/modules/access/bluray.c
+++ b/modules/access/bluray.c
@@ -791,10 +791,12 @@ static void blurayCloseOverlay(demux_t *p_demux, int plane)
             return;
 
     /* All overlays have been closed */
-    var_DelCallback(p_sys->p_vout, "mouse-moved", onMouseEvent, p_demux);
-    var_DelCallback(p_sys->p_vout, "mouse-clicked", onMouseEvent, p_demux);
-    vlc_object_release(p_sys->p_vout);
-    p_sys->p_vout = NULL;
+    if (p_sys->p_vout != NULL) {
+        var_DelCallback(p_sys->p_vout, "mouse-moved", onMouseEvent, p_demux);
+        var_DelCallback(p_sys->p_vout, "mouse-clicked", onMouseEvent, p_demux);
+        vlc_object_release(p_sys->p_vout);
+        p_sys->p_vout = NULL;
+    }
 }
 
 /*