[gnome-commander] Also update directories if changed, not only files

[Uwe Scholz <uwescholz src gnome org>]

commit 60a04db366fe567460f1311fec2371bcfd68b366
Author: Uwe Scholz <u scholz83 gmx de>
Date:   Wed Jun 23 22:22:09 2021 +0200

    Also update directories if changed, not only files
    
    From GIO standpoint it makes no difference to distinguish between files and folders as all are GFile 
objects

 src/gnome-cmd-dir.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/gnome-cmd-dir.cc b/src/gnome-cmd-dir.cc
index 8b33fb34..7fd63a14 100644
--- a/src/gnome-cmd-dir.cc
+++ b/src/gnome-cmd-dir.cc
@@ -858,7 +858,7 @@ void gnome_cmd_dir_file_changed (GnomeCmdDir *dir, const gchar *uri_str)
 
     GnomeCmdFile *f = dir->priv->file_collection->find(uri_str);
 
-    g_return_if_fail (GNOME_CMD_IS_FILE (f));
+    g_return_if_fail(f != nullptr);
 
     dir->priv->needs_mtime_update = TRUE;