[gnome-games] tracker: Make MimeTypeTrackerQuery own its callback

[Adrien Plazas <aplazas src gnome org>]

commit b43810978b011ebeff860a80ed795f42fa5f279b
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Sat Aug 13 17:02:18 2016 +0200

    tracker: Make MimeTypeTrackerQuery own its callback
    
    This avoids a compile time warning.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769844

 src/tracker/mime-type-tracker-query.vala |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/tracker/mime-type-tracker-query.vala b/src/tracker/mime-type-tracker-query.vala
index dca3ff1..74f0313 100644
--- a/src/tracker/mime-type-tracker-query.vala
+++ b/src/tracker/mime-type-tracker-query.vala
@@ -9,9 +9,9 @@ public class Games.MimeTypeTrackerQuery : Object, TrackerQuery {
        private GameForUri game_for_uri;
        private string[] uris;
 
-       public MimeTypeTrackerQuery (string mime_type, GameForUri game_for_uri) {
+       public MimeTypeTrackerQuery (string mime_type, owned GameForUri game_for_uri) {
                this.mime_type = mime_type;
-               this.game_for_uri = game_for_uri;
+               this.game_for_uri = (owned) game_for_uri;
                this.uris = {};
        }