[gnome-calendar] window: remove GSourceFunc once run

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 1c9686b9378a943ab23ee2219c64b3a312ce2404
Author: Mohammed Sadiq <sadiq sadiqpk org>
Date:   Tue Apr 18 08:53:50 2017 +0530

    window: remove GSourceFunc once run
    
    The function is supposed to run once every minute. So after
    the function is run, just remove it from main thread. So that it won't
    act as a time bomb.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=781081

 src/gcal-window.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gcal-window.c b/src/gcal-window.c
index b0e39fa..1ab5335 100644
--- a/src/gcal-window.c
+++ b/src/gcal-window.c
@@ -481,7 +481,7 @@ update_current_date (GcalWindow *window)
 out:
   g_timeout_add_seconds (60, (GSourceFunc) update_current_date, window);
 
-  GCAL_RETURN (G_SOURCE_CONTINUE);
+  GCAL_RETURN (G_SOURCE_REMOVE);
 }
 
 static void