[gtk+/gtk-2-18] Avoid drawing implicit paints to destroyed windows

[Alexander Larsson <alexl src gnome org>]

commit f2fffaad71c012d110ad79a1f15afdb81c580d2f
Author: Alexander Larsson <alexl redhat com>
Date:   Fri Jan 15 16:06:12 2010 +0100

    Avoid drawing implicit paints to destroyed windows
    
    It may happen that a window gets destroyed during painting, if so
    we should not draw the implicit paint double-buffered pixmap to it
    as that will cause a BadDrawable X error.
    
    This fixes bug 600865
    (cherry picked from commit f96e51db46f2196707c0ea44a46f1d67f9a069d4)

 gdk/gdkwindow.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 5e9e44f..612f5ac 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -2668,7 +2668,7 @@ gdk_window_flush_implicit_paint (GdkWindow *window)
   gdk_region_offset (region, private->abs_x, private->abs_y);
   gdk_region_intersect (region, paint->region);
 
-  if (!gdk_region_empty (region))
+  if (!GDK_WINDOW_DESTROYED (window) && !gdk_region_empty (region))
     {
       /* Remove flushed region from the implicit paint */
       gdk_region_subtract (paint->region, region);
@@ -2701,7 +2701,7 @@ gdk_window_end_implicit_paint (GdkWindow *window)
 
   private->implicit_paint = NULL;
 
-  if (!gdk_region_empty (paint->region))
+  if (!GDK_WINDOW_DESTROYED (window) && !gdk_region_empty (paint->region))
     {
       /* Some regions are valid, push these to window now */
       tmp_gc = _gdk_drawable_get_scratch_gc ((GdkDrawable *)window, FALSE);