[gtk+] gdk: Make GDK_NONE Atom translate to NULL

[Benjamin Otte <otte src gnome org>]

commit 0451c6d30c47896511e4cdfe941ef7c77e0e4be4
Author: Benjamin Otte <otte redhat com>
Date:   Wed Nov 15 16:45:12 2017 +0100

    gdk: Make GDK_NONE Atom translate to NULL
    
    Instead of the string "NONE" we now use NULL.

 gdk/gdkproperty.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkproperty.c b/gdk/gdkproperty.c
index faa4664..d46b9ed 100644
--- a/gdk/gdkproperty.c
+++ b/gdk/gdkproperty.c
@@ -68,8 +68,7 @@ ensure_atom_tables (void)
   names_to_atoms = g_hash_table_new (g_str_hash, g_str_equal);
   atoms_to_names = g_ptr_array_new ();
 
-  g_hash_table_insert (names_to_atoms, (gpointer) "NONE", NULL);
-  g_ptr_array_add (atoms_to_names, (gpointer) "NONE");
+  g_ptr_array_add (atoms_to_names, NULL);
 }
 
 static GdkAtom