[gtk] Fix blank popovers

[Matthias Clasen <matthiasc src gnome org>]

commit bde19f9b2a6497d526b074bf9b7b2b50ca6fd566
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Oct 13 16:38:41 2022 -0400

    Fix blank popovers
    
    This was a typo in 2b00b64e8cbda9d1, making
    us render the background on the wrong snapshot.

 gtk/gtkpopover.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkpopover.c b/gtk/gtkpopover.c
index 326398dbcd..ccbaa788de 100644
--- a/gtk/gtkpopover.c
+++ b/gtk/gtkpopover.c
@@ -1576,7 +1576,7 @@ create_arrow_render_node (GtkPopover *popover)
                                  0, 0,
                                  gtk_widget_get_width (widget),
                                  gtk_widget_get_height (widget));
-  gtk_css_style_snapshot_background (&boxes, snapshot);
+  gtk_css_style_snapshot_background (&boxes, bg_snapshot);
   node = gtk_snapshot_free_to_node (bg_snapshot);
   if (node)
     {