[gtk+] Fix a mixup in popover realization

[Matthias Clasen <matthiasc src gnome org>]

commit 182dd3c1ea61319217a7b89099a8324bb387ed19
Author: Matthias Clasen <mclasen redhat com>
Date:   Fri Oct 24 23:36:35 2014 -0400

    Fix a mixup in popover realization
    
    When the window is on a non-default screen, popover_realize
    ended up passing a visual and a parent_window from different
    screens into gdk_window_new, which doesn't work. Fix it by
    using the visual of the parent window.

 gtk/gtkwindow.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 11a2220..08afd8f 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -6299,7 +6299,7 @@ popover_realize (GtkWidget        *widget,
   attributes.y = rect.y;
   attributes.width = rect.width;
   attributes.height = rect.height;
-  attributes.visual = gtk_widget_get_visual (widget);
+  attributes.visual = gtk_widget_get_visual (GTK_WIDGET (window));
   attributes.event_mask = gtk_widget_get_events (popover->widget) |
     GDK_EXPOSURE_MASK;
   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;