[mutter] prefs: Use an unsigned value for META_KEYBINDING_ACTION_NONE

[Florian Müllner <fmuellner src gnome org>]

commit 7f1429812615ec7780176cf36ccfa539fe2ba0b2
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Dec 21 12:04:19 2012 +0100

    prefs: Use an unsigned value for META_KEYBINDING_ACTION_NONE
    
    Keybinding actions are unsigned, so it is a tad bit odd to use a
    negative value for NONE and rely on implicit casting.
    Use 0 instead.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=643111

 src/meta/prefs.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/meta/prefs.h b/src/meta/prefs.h
index 99a9be7..e264509 100644
--- a/src/meta/prefs.h
+++ b/src/meta/prefs.h
@@ -145,7 +145,7 @@ void     meta_prefs_set_ignore_request_hide_titlebar (gboolean whether);
  */
 typedef enum _MetaKeyBindingAction
 {
-  META_KEYBINDING_ACTION_NONE = -1,
+  META_KEYBINDING_ACTION_NONE,
   META_KEYBINDING_ACTION_WORKSPACE_1,
   META_KEYBINDING_ACTION_WORKSPACE_2,
   META_KEYBINDING_ACTION_WORKSPACE_3,