[gnome-games] retro: Remove core from audio and video outputs

[Adrien Plazas <aplazas src gnome org>]

commit fa418d2e2dd7724c44669119e01da03b260d8df7
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Thu May 18 14:01:03 2017 +0200

    retro: Remove core from audio and video outputs
    
    This will help ensuring we don't use the core we want to free anymore.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=782772

 src/retro/retro-runner.vala |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/retro/retro-runner.vala b/src/retro/retro-runner.vala
index f542ee9..3d3acb5 100644
--- a/src/retro/retro-runner.vala
+++ b/src/retro/retro-runner.vala
@@ -242,7 +242,9 @@ public class Games.RetroRunner : Object, Runner {
                settings.changed["video-filter"].disconnect (on_video_filter_changed);
 
                core = null;
+               video.set_core (null);
                video = null;
+               audio.set_core (null);
                audio = null;
                widget = null;
                input_manager = null;