[gtk/matthiasc/for-master: 5/6] widget: Don't leak a reference when reordering

[Matthias Clasen <matthiasc src gnome org>]

commit 0cd0ef2d26736c7ba0eadb00cb446d2b31c1f699
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat May 9 19:27:05 2020 -0400

    widget: Don't leak a reference when reordering
    
    When reordering a widget that is alrady under the
    same parent, we must not take another reference.

 gtk/gtkwidget.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 167d9a15ab..15c775aa44 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -5824,7 +5824,8 @@ gtk_widget_reposition_after (GtkWidget *widget,
   /* keep this function in sync with gtk_menu_attach_to_widget()
    */
 
-  g_object_ref_sink (widget);
+  if (priv->parent == NULL)
+    g_object_ref_sink (widget);
 
   gtk_widget_push_verify_invariants (widget);