[ghex] appwin: Default response on closing unsaved doc should be Cancel.

[Logan Rathbone <larathbone src gnome org>]

commit 2e6a6d734673f140c9cc12c1a8523080e44d6b9c
Author: Logan Rathbone <poprocks gmail com>
Date:   Thu Jun 23 14:34:50 2022 -0400

    appwin: Default response on closing unsaved doc should be Cancel.

 src/ghex-application-window.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/ghex-application-window.c b/src/ghex-application-window.c
index 9ef0bed..b93f6f3 100644
--- a/src/ghex-application-window.c
+++ b/src/ghex-application-window.c
@@ -461,6 +461,7 @@ close_doc_confirmation_dialog (GHexApplicationWindow *self, AdwTabPage *page)
                        _("_Discard Changes"),  GTK_RESPONSE_REJECT,
                        _("_Go Back"),                  GTK_RESPONSE_CANCEL,
                        NULL);
+       gtk_dialog_set_default_response (GTK_DIALOG(dialog), GTK_RESPONSE_CANCEL);
 
        extra_user_data = page;
        g_signal_connect (dialog, "response",