[gtk/gbsneto/filechooser-column-view: 35/47] fixup! filechooserwidget: Move tooltip text to column view

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit c6bd543aefc2e09f220ad9e7917fa2d662427564
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sat Oct 8 20:10:28 2022 -0300

    fixup! filechooserwidget: Move tooltip text to column view

 gtk/gtkfilechooserwidget.c | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/gtk/gtkfilechooserwidget.c b/gtk/gtkfilechooserwidget.c
index 295224e4c1..36cfb0287d 100644
--- a/gtk/gtkfilechooserwidget.c
+++ b/gtk/gtkfilechooserwidget.c
@@ -2051,6 +2051,10 @@ column_view_get_tooltip_text (GtkListItem *list_item)
   GtkFileSystemItem *item;
   GFile *file;
 
+  item = gtk_list_item_get_item (list_item);
+  if (!item)
+    return NULL;
+
   impl = GTK_FILE_CHOOSER_WIDGET (gtk_widget_get_ancestor (gtk_list_item_get_child (list_item),
                                                            GTK_TYPE_FILE_CHOOSER_WIDGET));
   g_assert (impl != NULL);