[gnome-shell/wip/jtojnar/ext-clipboard] extensionsService: Fix copying technical details when extension crashes

[Jan Tojnar <jtojnar src gnome org>]

commit e1e6566b4a6364a85ac971498d1bb7eca7deac0e
Author: Jan Tojnar <jtojnar gmail com>
Date:   Thu Apr 8 06:25:28 2021 +0200

    extensionsService: Fix copying technical details when extension crashes
    
    This was forgotten when porting to GTK 4, leading to the following error
    when user tries to copy the error message produced by an extension:
    
            JS ERROR: TypeError: Gtk.Clipboard is undefined
            _initActions/<@resource:///org/gnome/Shell/Extensions/js/extensionsService.js:255:31
            run@resource:///org/gnome/Shell/Extensions/js/dbusService.js:177:20
            main@resource:///org/gnome/Shell/Extensions/js/main.js:19:13
            run@resource:///org/gnome/gjs/modules/script/package.js:206:19
            start@resource:///org/gnome/gjs/modules/script/package.js:190:8
            
@/nix/store/fwnkwvhwm3kqck4fhkc5y5z853radggg-gnome-shell-40.0/share/gnome-shell/.org.gnome.Shell.Extensions-wrapped:7:17

 js/dbusServices/extensions/extensionsService.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/js/dbusServices/extensions/extensionsService.js b/js/dbusServices/extensions/extensionsService.js
index 35e7805785..2a5cceaef2 100644
--- a/js/dbusServices/extensions/extensionsService.js
+++ b/js/dbusServices/extensions/extensionsService.js
@@ -252,8 +252,8 @@ var ExtensionPrefsDialog = GObject.registerClass({
             enabled: false,
         });
         action.connect('activate', () => {
-            const clipboard = Gtk.Clipboard.get_default(this.get_display());
-            clipboard.set_text(this._errorMarkdown, -1);
+            const clipboard = this.get_display().get_clipboard();
+            clipboard.set_text(this._errorMarkdown);
         });
         this._actionGroup.add_action(action);