[gdm] Only access ut_exit if available

[Ray Strode <halfline src gnome org>]

commit dad663da83d80de4ca6ba03f3784f5afdfeb53ee
Author: Daniel Macks <dmacks netspace org>
Date:   Thu Jul 16 23:07:45 2009 -0400

    Only access ut_exit if available
    
    This fixes a build failure on OSX.
    
    See http://bugzilla.gnome.org/show_bug.cgi?id=568487

 daemon/gdm-session-record.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/daemon/gdm-session-record.c b/daemon/gdm-session-record.c
index cd5de47..4ed60a1 100644
--- a/daemon/gdm-session-record.c
+++ b/daemon/gdm-session-record.c
@@ -322,8 +322,10 @@ gdm_session_record_logout (GPid                  session_pid,
 #elif defined(HAVE_UT_UT_TIME)
                 u->ut_time = session_record.ut_time;
 #endif
+#ifdef HAVE_UT_UT_EXIT_E_TERMINATION
                 u->ut_exit.e_termination = 0;
                 u->ut_exit.e_exit = 0;
+#endif
 
                 pututxline (u);