[gimp/wip/Jehan/issue-8518-welcome-dialog-macos] Issue #8518: Could not close new Welcome dialog.

[Jehan <jehanp src gnome org>]

commit c10a451e1a2cc5dd4be94bc30bc10991d525cb16
Author: Jehan <jehan girinstud io>
Date:   Sat Sep 10 23:56:56 2022 +0200

    Issue #8518: Could not close new Welcome dialog.
    
    I can't reproduce this on Linux and according to docs and tests, the
    "response" signal handles the delete-event.
    But maybe there is a bug on macOS where it is not triggered when
    clicking the window button?

 app/dialogs/welcome-dialog.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/app/dialogs/welcome-dialog.c b/app/dialogs/welcome-dialog.c
index 94b626adf7..6bf585e070 100644
--- a/app/dialogs/welcome-dialog.c
+++ b/app/dialogs/welcome-dialog.c
@@ -98,6 +98,10 @@ welcome_dialog_create (Gimp *gimp)
                     "response",
                     G_CALLBACK (gtk_widget_destroy),
                     NULL);
+  g_signal_connect (welcome_dialog,
+                    "delete-event",
+                    G_CALLBACK (gtk_widget_destroy),
+                    NULL);
 
   main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
   gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);