[mutter] workspace: Replace a boolean ^ with !=

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

commit 7b8ee4ee1e571a83ab3511ae3b50ae3602574d0d
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Fri Aug 15 22:48:50 2014 -0400

    workspace: Replace a boolean ^ with !=
    
    This is a lot easier to understand.

 src/core/workspace.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/core/workspace.c b/src/core/workspace.c
index 7e60c49..bc718da 100644
--- a/src/core/workspace.c
+++ b/src/core/workspace.c
@@ -573,7 +573,7 @@ meta_workspace_activate_with_focus (MetaWorkspace *workspace,
    * or the new one *but not both*, then update the
    * _net_showing_desktop hint
    */
-  if (old && (old->showing_desktop ^ workspace->showing_desktop))
+  if (old && (old->showing_desktop != workspace->showing_desktop))
     meta_screen_update_showing_desktop_hint (workspace->screen);
 
   if (old == NULL)