[gtk+] gdkwindow: Fix gdk_window_set_child_shapes()

[Alexander Larsson <alexl src gnome org>]

commit cc5752aff40eb3f2b4a8a6ea38f0c41cb569b0de
Author: Alexander Larsson <alexl redhat com>
Date:   Tue Feb 4 12:03:03 2014 +0100

    gdkwindow: Fix gdk_window_set_child_shapes()
    
    This did the reverse of what it should, making the shape be
    the part where the children were *not*.

 gdk/gdkwindow.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 691e035..4fe70bc 100644
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -6421,6 +6421,8 @@ do_child_shapes (GdkWindow *window,
   if (merge && window->shape)
     cairo_region_subtract (region, window->shape);
 
+  cairo_region_xor_rectangle (region, &r);
+
   gdk_window_shape_combine_region (window, region, 0, 0);
 }
 
@@ -6542,6 +6544,8 @@ do_child_input_shapes (GdkWindow *window,
   if (merge && window->input_shape)
     cairo_region_subtract (region, window->input_shape);
 
+  cairo_region_xor_rectangle (region, &r);
+
   gdk_window_input_shape_combine_region (window, region, 0, 0);
 }