lib/media player: inherit vbi-page to achieve correct variable value on first use

(cherry picked from commit 8d48e95e9fe21e92e5da0ed0613ff86c5aa764f8)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

lib/media_player.c

@@ -439,7 +439,7 @@ libvlc_media_player_new( libvlc_instance_t *instance )
     var_Create (mp, "deinterlace", VLC_VAR_INTEGER);
     var_Create (mp, "deinterlace-mode", VLC_VAR_STRING);
 
-    var_Create (mp, "vbi-page", VLC_VAR_INTEGER);
+    var_Create (mp, "vbi-page", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);
 
     var_Create (mp, "marq-marquee", VLC_VAR_STRING);
     var_Create (mp, "marq-color", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT);