[gnome-games] core: Make GameCollection private

[Adrien Plazas <aplazas src gnome org>]

commit 815f084e1c0235e2f91d562bf89b9aee289eb1ac
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Fri Jul 14 13:31:01 2017 +0200

    core: Make GameCollection private
    
    There is no need for it to be public.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=782824

 src/core/game-collection.vala |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/core/game-collection.vala b/src/core/game-collection.vala
index ce7ac80..7d598f9 100644
--- a/src/core/game-collection.vala
+++ b/src/core/game-collection.vala
@@ -1,6 +1,6 @@
 // This file is part of GNOME Games. License: GPL-3.0+.
 
-public class Games.GameCollection : Object {
+private class Games.GameCollection : Object {
        private GenericSet<Game> games;
        private ListStore list_store;