[tracker] build: Fix return value error for tracker_file_notifier_get_file_type

[Ting-Wei Lan <lantw src gnome org>]

commit 789462f3c0b731a5188c3ae89d356c097d3bcf32
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Mon Jul 27 01:14:35 2015 +0800

    build: Fix return value error for tracker_file_notifier_get_file_type
    
    https://bugzilla.gnome.org/show_bug.cgi?id=752900

 src/libtracker-miner/tracker-file-notifier.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libtracker-miner/tracker-file-notifier.c b/src/libtracker-miner/tracker-file-notifier.c
index 2862490..49a0998 100644
--- a/src/libtracker-miner/tracker-file-notifier.c
+++ b/src/libtracker-miner/tracker-file-notifier.c
@@ -1767,8 +1767,8 @@ tracker_file_notifier_get_file_type (TrackerFileNotifier *notifier,
        TrackerFileNotifierPrivate *priv;
        GFile *canonical;
 
-       g_return_if_fail (TRACKER_IS_FILE_NOTIFIER (notifier));
-       g_return_if_fail (G_IS_FILE (file));
+       g_return_val_if_fail (TRACKER_IS_FILE_NOTIFIER (notifier), G_FILE_TYPE_UNKNOWN);
+       g_return_val_if_fail (G_IS_FILE (file), G_FILE_TYPE_UNKNOWN);
 
        priv = notifier->priv;
        canonical = tracker_file_system_get_file (priv->file_system,