[gtk/fix-uri-crash-3] Fix a possible crash in gtk_show_uri

[Matthias Clasen <matthiasc src gnome org>]

commit 536da7a15c1737bc63c8ecba5ccac40cc2170860
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Apr 19 16:39:53 2021 -0400

    Fix a possible crash in gtk_show_uri
    
    g_file_get_basename can return NULL.
    Deal with it somehow.
    
    Fixes: #3883

 gdk/x11/gdkapplaunchcontext-x11.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gdk/x11/gdkapplaunchcontext-x11.c b/gdk/x11/gdkapplaunchcontext-x11.c
index 8051229ba5..2341bb2e1f 100644
--- a/gdk/x11/gdkapplaunchcontext-x11.c
+++ b/gdk/x11/gdkapplaunchcontext-x11.c
@@ -45,6 +45,9 @@ get_display_name (GFile     *file,
   if (name == NULL)
     {
       name = g_file_get_basename (file);
+      if (name == NULL)
+        name = g_file_get_uri (file);
+
       if (!g_utf8_validate (name, -1, NULL))
         {
           tmp = name;