[gtk+/gtk-2-18] Only send exposes on unmap if window really was unmapped

[Alexander Larsson <alexl src gnome org>]

commit 8954a7daf527619af4c7639323b9b45c2a9bd38a
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Nov 3 14:41:36 2009 +0100

    Only send exposes on unmap if window really was unmapped
    
    Exposing when you hide a hidden window is just a waste of time.
    (cherry picked from commit a299797883440e7671956d73761885ec102840b0)

 gdk/gdkwindow.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index d5b427f..ff7bdd8 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -6831,7 +6831,8 @@ gdk_window_hide (GdkWindow *window)
     }
 
   /* Invalidate the rect */
-  gdk_window_invalidate_in_parent (private);
+  if (was_mapped)
+    gdk_window_invalidate_in_parent (private);
 }
 
 /**