[gthumb] thumbnailer: give priority to the xdg directory

[Paolo Bacchilega <paobac src gnome org>]

commit 5fc822ac4d595e66e448383d7059747126bda68e
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Sun Apr 3 10:26:06 2022 +0200

    thumbnailer: give priority to the xdg directory

 gthumb/gnome-desktop-thumbnail.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)
---
diff --git a/gthumb/gnome-desktop-thumbnail.c b/gthumb/gnome-desktop-thumbnail.c
index ec491d57..d0568637 100644
--- a/gthumb/gnome-desktop-thumbnail.c
+++ b/gthumb/gnome-desktop-thumbnail.c
@@ -861,12 +861,17 @@ gnome_desktop_thumbnail_factory_new (GnomeDesktopThumbnailSize size)
 
 #else
 
-  /* use the xdg directory only if it already exists */
+  /* use the xdg directory if it already exists or the old dir does not exists. */
 
   char *xdg_directory = g_build_filename (g_get_user_cache_dir (), "thumbnails", NULL);
   factory->priv->use_xdg_dir = g_file_test (xdg_directory, G_FILE_TEST_EXISTS);
   g_free (xdg_directory);
 
+  if (!factory->priv->use_xdg_dir) {
+    char *old_cache_dir = g_build_filename (g_get_home_dir (), ".thumbnails", NULL);
+    factory->priv->use_xdg_dir = !g_file_test (xdg_directory, G_FILE_TEST_EXISTS);
+  }
+
 #endif
 
   return factory;