[gnome-desktop/gnome-3-8] thumbnailer: Fix compile-time warning on x32

[Bastien Nocera <hadess src gnome org>]

commit 50e3a5a147e865ce7080be70ae26cf739293fb53
Author: Colin Walters <walters verbum org>
Date:   Thu May 23 17:46:08 2013 +0200

    thumbnailer: Fix compile-time warning on x32
    
    https://bugzilla.gnome.org/show_bug.cgi?id=700548

 libgnome-desktop/gnome-desktop-thumbnail.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgnome-desktop/gnome-desktop-thumbnail.c b/libgnome-desktop/gnome-desktop-thumbnail.c
index daf8ed5..c160330 100644
--- a/libgnome-desktop/gnome-desktop-thumbnail.c
+++ b/libgnome-desktop/gnome-desktop-thumbnail.c
@@ -1427,7 +1427,7 @@ gnome_desktop_thumbnail_factory_save_thumbnail (GnomeDesktopThumbnailFactory *fa
     }
   close (tmp_fd);
   
-  g_snprintf (mtime_str, 21, "%ld",  original_mtime);
+  g_snprintf (mtime_str, 21, "%" G_GUINT64_FORMAT, (guint64) original_mtime);
   width = gdk_pixbuf_get_option (thumbnail, "tEXt::Thumb::Image::Width");
   height = gdk_pixbuf_get_option (thumbnail, "tEXt::Thumb::Image::Height");
 
@@ -1533,7 +1533,7 @@ gnome_desktop_thumbnail_factory_create_failed_thumbnail (GnomeDesktopThumbnailFa
     }
   close (tmp_fd);
   
-  g_snprintf (mtime_str, 21, "%ld",  mtime);
+  g_snprintf (mtime_str, 21, "%" G_GUINT64_FORMAT, (guint64) mtime);
   pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, 1, 1);
   saved_ok  = gdk_pixbuf_save (pixbuf,
                               tmp_path,