[tracker] libtracker-direct: Plug leaks

[Carlos Garnacho <carlosg src gnome org>]

commit b0318ec6a68b44c5cdc99cf0dfb86d33a02eacd4
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun Sep 9 00:39:24 2018 +0200

    libtracker-direct: Plug leaks

 src/libtracker-direct/tracker-direct.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/libtracker-direct/tracker-direct.c b/src/libtracker-direct/tracker-direct.c
index f4fccf1ea..326906e44 100644
--- a/src/libtracker-direct/tracker-direct.c
+++ b/src/libtracker-direct/tracker-direct.c
@@ -182,6 +182,8 @@ query_thread_pool_func (gpointer data,
                g_task_return_pointer (task, cursor, g_object_unref);
        else
                g_task_return_error (task, error);
+
+       g_object_unref (task);
 }
 
 static void
@@ -401,6 +403,7 @@ tracker_direct_connection_finalize (GObject *object)
        g_clear_object (&priv->journal);
        g_clear_object (&priv->ontology);
        g_clear_object (&priv->data_manager);
+       g_clear_object (&priv->namespace_manager);
 
        G_OBJECT_CLASS (tracker_direct_connection_parent_class)->finalize (object);
 }
@@ -484,6 +487,7 @@ tracker_direct_connection_query (TrackerSparqlConnection  *self,
        g_mutex_lock (&priv->mutex);
        query = tracker_sparql_query_new (priv->data_manager, sparql);
        cursor = TRACKER_SPARQL_CURSOR (tracker_sparql_query_execute_cursor (query, error));
+       g_object_unref (query);
        if (cursor)
                tracker_sparql_cursor_set_connection (cursor, self);
        g_mutex_unlock (&priv->mutex);