[gnome-builder/wip/gtk4-port] plugins/vim: fix discard callback

[Christian Hergert <chergert src gnome org>]

commit 5e687d521679aa937907ba8eca9da63153fcdb42
Author: Christian Hergert <chergert redhat com>
Date:   Fri May 6 17:57:01 2022 -0700

    plugins/vim: fix discard callback

 src/plugins/vim/gbp-vim-editor-page-addin.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/plugins/vim/gbp-vim-editor-page-addin.c b/src/plugins/vim/gbp-vim-editor-page-addin.c
index 0b6831c94..12bcf068a 100644
--- a/src/plugins/vim/gbp-vim-editor-page-addin.c
+++ b/src/plugins/vim/gbp-vim-editor-page-addin.c
@@ -402,7 +402,7 @@ gbp_vim_editor_page_addin_execute_command_cb (GbpVimEditorPageAddin *self,
       ide_editor_page_discard_changes_async (self->page,
                                              NULL,
                                              gbp_vim_editor_page_addin_discard_cb,
-                                             NULL);
+                                             g_object_ref (self));
       IDE_RETURN (TRUE);
     }