[glib] Fix return value error in g_list_store_sort

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

commit 4a09d0cf7a65cd08d4156eafd80e943712216d49
Author: Ting-Wei Lan <lantw src gnome org>
Date:   Wed Sep 2 01:19:40 2015 +0800

    Fix return value error in g_list_store_sort

 gio/gliststore.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gio/gliststore.c b/gio/gliststore.c
index dff3958..7f8c02a 100644
--- a/gio/gliststore.c
+++ b/gio/gliststore.c
@@ -334,7 +334,7 @@ g_list_store_sort (GListStore       *store,
   gint n_items;
 
   g_return_if_fail (G_IS_LIST_STORE (store));
-  g_return_val_if_fail (compare_func != NULL, 0);
+  g_return_if_fail (compare_func != NULL);
 
   g_sequence_sort (store->items, compare_func, user_data);