gtask: Fix a signed/unsigned integer comparison

The GSource times assigned to creation_time are always signed.

https://bugzilla.gnome.org/show_bug.cgi?id=736806

diff --git a/gio/gtask.c b/gio/gtask.c
index ad6e50f..ffa4dae 100644 (file)
--- a/gio/gtask.c
+++ b/gio/gtask.c
@@ -540,7 +540,7 @@ struct _GTask {
   GDestroyNotify task_data_destroy;
 
   GMainContext *context;
-  guint64 creation_time;
+  gint64 creation_time;
   gint priority;
   GCancellable *cancellable;
   gboolean check_cancellable;