[mutter] cursor: Add a META_CURSOR_NONE

[Jasper St. Pierre <jstpierre src gnome org>]

commit b05953d960e5140889d9a929b9e3995de65bed9f
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sat May 17 13:24:56 2014 -0400

    cursor: Add a META_CURSOR_NONE
    
    This is for cases where we have a MetaCursorReference that does
    not have an X cursor equivalent... we have to return something!

 src/meta/common.h |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/meta/common.h b/src/meta/common.h
index 0461c39..0b58678 100644
--- a/src/meta/common.h
+++ b/src/meta/common.h
@@ -226,6 +226,7 @@ typedef enum
  */
 typedef enum
 {
+  META_CURSOR_NONE = 0,
   META_CURSOR_DEFAULT,
   META_CURSOR_NORTH_RESIZE,
   META_CURSOR_SOUTH_RESIZE,