[gtk/gtk-3-24] flowbox: Don't use a removed child after it has been unparented

[Matthias Clasen <matthiasc src gnome org>]

commit 52d944ec441037f53d758e89645bd9c22d23403e
Author: Kjell Ahlstedt <kjellahlstedt gmail com>
Date:   Thu Jun 4 11:23:46 2020 +0200

    flowbox: Don't use a removed child after it has been unparented
    
    In gtk_flow_box_remove(), call g_sequence_remove() before the child is unparented.
    
    See MR !2029

 gtk/gtkflowbox.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkflowbox.c b/gtk/gtkflowbox.c
index 5a797f21e9..cd7bd83c51 100644
--- a/gtk/gtkflowbox.c
+++ b/gtk/gtkflowbox.c
@@ -3270,8 +3270,8 @@ gtk_flow_box_remove (GtkContainer *container,
   if (child == priv->selected_child)
     priv->selected_child = NULL;
 
-  gtk_widget_unparent (GTK_WIDGET (child));
   g_sequence_remove (CHILD_PRIV (child)->iter);
+  gtk_widget_unparent (GTK_WIDGET (child));
 
   if (was_visible && gtk_widget_get_visible (GTK_WIDGET (box)))
     gtk_widget_queue_resize (GTK_WIDGET (box));