[mutter] barrier: fix fallback for unsupported servers

[Tim Lunn <timl src gnome org>]

commit b3c572b8e39a0b36b589305ccf2a41ae4c3bcc10
Author: Tim Lunn <tim feathertop org>
Date:   Sat Feb 9 10:28:22 2013 +1100

    barrier: fix fallback for unsupported servers
    
    add missing ifdef HAVE_XI23.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=677215

 src/core/display.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/core/display.c b/src/core/display.c
index 2e40976..92e9f53 100644
--- a/src/core/display.c
+++ b/src/core/display.c
@@ -1837,11 +1837,13 @@ get_input_event (MetaDisplay *display,
           if (((XIEnterEvent *) input_event)->deviceid == META_VIRTUAL_CORE_POINTER_ID)
             return input_event;
           break;
+#ifdef HAVE_XI23
         case XI_BarrierHit:
         case XI_BarrierLeave:
           if (((XIBarrierEvent *) input_event)->deviceid == META_VIRTUAL_CORE_POINTER_ID)
             return input_event;
           break;
+#endif /* HAVE_XI23 */
         default:
           break;
         }