[gnome-flashback] desktop-background: small fix

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 7efc25971f37e915a7008a88056bb73e6a4aa2b7
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Oct 10 02:46:17 2014 +0300

    desktop-background: small fix

 .../libdesktop-background/desktop-background.c     |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/gnome-flashback/libdesktop-background/desktop-background.c 
b/gnome-flashback/libdesktop-background/desktop-background.c
index 529aae1..7efe2f5 100644
--- a/gnome-flashback/libdesktop-background/desktop-background.c
+++ b/gnome-flashback/libdesktop-background/desktop-background.c
@@ -161,10 +161,12 @@ event_filter_func (GdkXEvent *xevent,
                if (nautilus_raised == FALSE) {
                        GdkWindow *nautilus = get_nautilus_window (background);
 
-                       gdk_window_hide (nautilus);
-                       gdk_window_show (nautilus);
+                       if (GDK_IS_WINDOW (nautilus)) {
+                               gdk_window_hide (nautilus);
+                               gdk_window_show (nautilus);
 
-                       nautilus_raised = TRUE;
+                               nautilus_raised = TRUE;
+                       }
                }
        } else {
                nautilus_raised = FALSE;