[nautilus] window-slot: Use g_clear_object()

[Ernestas Kulik <ernestask src gnome org>]

commit 995cc8d845e48ca26accaf8bc6e7a346118925b8
Author: Ernestas Kulik <ekulik redhat com>
Date:   Fri Apr 5 15:17:54 2019 +0200

    window-slot: Use g_clear_object()

 src/nautilus-window-slot.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/src/nautilus-window-slot.c b/src/nautilus-window-slot.c
index bf26cda3e..e6157bc0e 100644
--- a/src/nautilus-window-slot.c
+++ b/src/nautilus-window-slot.c
@@ -3012,8 +3012,7 @@ nautilus_window_slot_switch_new_content_view (NautilusWindowSlot *self)
         g_binding_unbind (priv->templates_menu_binding);
         widget = GTK_WIDGET (priv->content_view);
         gtk_widget_destroy (widget);
-        g_object_unref (priv->content_view);
-        priv->content_view = NULL;
+        g_clear_object (&priv->content_view);
     }
 
     if (priv->new_content_view != NULL)