[gnome-games] Revert "retro-runner: Remove game-init and game-deinit signals"

[Alexander Mikhaylenko <alexm src gnome org>]

commit f2aa94b31ae9c2f00639bc0128a75ada00c1d418
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Wed Jan 22 20:44:25 2020 +0000

    Revert "retro-runner: Remove game-init and game-deinit signals"
    
    This reverts commit 7f094342d9153d51fa7d7f98aa3b1e3e7b07d885

 src/retro/retro-runner.vala | 7 +++++++
 1 file changed, 7 insertions(+)
---
diff --git a/src/retro/retro-runner.vala b/src/retro/retro-runner.vala
index 6cb16bb4..d021a179 100644
--- a/src/retro/retro-runner.vala
+++ b/src/retro/retro-runner.vala
@@ -3,6 +3,9 @@
 public class Games.RetroRunner : Object, Runner {
        private const int MAX_AUTOSAVES = 5;
 
+       public signal void game_init ();
+       public signal void game_deinit ();
+
        public bool can_fullscreen {
                get { return true; }
        }
@@ -285,6 +288,8 @@ public class Games.RetroRunner : Object, Runner {
 
                settings.changed["video-filter"].disconnect (on_video_filter_changed);
 
+               game_deinit ();
+
                core = null;
                view.set_core (null);
                view = null;
@@ -324,6 +329,8 @@ public class Games.RetroRunner : Object, Runner {
                                critical (e.message);
                        }
 
+               game_init ();
+
                var platforms_dir = Application.get_platforms_dir ();
                var platform_id = platform.get_id ();
                core.system_directory = @"$platforms_dir/$platform_id/system";