[gnome-text-editor] page: handle NULL current_folder gracefully

[Christian Hergert <chergert src gnome org>]

commit 6dbf01c9925fca339f77009ce7432e0332e6ddda
Author: Christian Hergert <chergert redhat com>
Date:   Sun Jun 19 15:15:33 2022 -0700

    page: handle NULL current_folder gracefully
    
    We can detect what this is correctly even if the Portal refuses to give
    us a value so long as we're not getting documents from the document portal.
    
    As we do not use the document portal for documents with our Flatpak, that
    isn't an issue.
    
    Fixes #419

 src/editor-page.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/editor-page.c b/src/editor-page.c
index 6e50b0a..bd0e428 100644
--- a/src/editor-page.c
+++ b/src/editor-page.c
@@ -1123,6 +1123,9 @@ editor_page_save_as_cb (EditorPage           *self,
           GtkSourceNewlineType crlf = _editor_file_chooser_get_line_ending (GTK_FILE_CHOOSER (native));
           g_autoptr(GFile) directory = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (native));
 
+          if (directory == NULL)
+            directory = g_file_get_parent (dest);
+
           if (directory != NULL)
             {
               g_autoptr(GSettings) settings = g_settings_new ("org.gnome.TextEditor");