[gtk/fix-filechooser-critical] filechooser: Avoid a critical

[Matthias Clasen <matthiasc src gnome org>]

commit 8ff9c851ce6ab14eeccc8b0fdffec6181b26ac90
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jul 3 15:15:06 2021 -0400

    filechooser: Avoid a critical
    
    This was showing up when calling some filechooser api on
    a native filechooser, where we use a filechooser dialog
    behind the scenes, but it does not have focus.
    
    Fixes: #4077

 gtk/gtkfilechooserwidget.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gtk/gtkfilechooserwidget.c b/gtk/gtkfilechooserwidget.c
index 918206ac26..f2fe1f9257 100644
--- a/gtk/gtkfilechooserwidget.c
+++ b/gtk/gtkfilechooserwidget.c
@@ -5444,6 +5444,7 @@ gtk_file_chooser_widget_get_files (GtkFileChooser *chooser)
         goto file_entry;
     }
   else if (impl->location_entry &&
+           current_focus &&
            (current_focus == impl->location_entry ||
             gtk_widget_is_ancestor (current_focus, impl->location_entry)))
     {