[gtk+] wayland: Return NULL as the keyval name for 0

[Matthias Clasen <matthiasc src gnome org>]

commit 720ca63c5d06bdbe1f58ef3256bda22dab79cc87
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Apr 6 10:35:26 2013 -0400

    wayland: Return NULL as the keyval name for 0
    
    This is what the X11 backend does, and it makes the "NoSymbol"
    disappear from menuitems that don't have an accelerator.

 gdk/wayland/gdkdisplaymanager-wayland.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gdk/wayland/gdkdisplaymanager-wayland.c b/gdk/wayland/gdkdisplaymanager-wayland.c
index 68e69d8..5d4e12b 100644
--- a/gdk/wayland/gdkdisplaymanager-wayland.c
+++ b/gdk/wayland/gdkdisplaymanager-wayland.c
@@ -181,6 +181,8 @@ gdk_wayland_display_manager_get_keyval_name (GdkDisplayManager *manager,
 
   switch (keyval)
     {
+    case 0:
+      return NULL;
     case GDK_KEY_Page_Up:
       return "Page_Up";
     case GDK_KEY_Page_Down: