Avoid dereferencing null pointer in utmp.c.

Signed-off-by: Amadeusz Sławiński <amade@asmblr.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/utmp.c b/src/utmp.c
index afa0948..6562052 100644
--- a/src/utmp.c
+++ b/src/utmp.c
@@ -575,7 +575,7 @@ struct win *wi;
     return ut_delete_user(slot, u.ut_pid, 0, 0) != 0;
 #endif
 #ifdef HAVE_UTEMPTER
-  if (eff_uid && wi->w_ptyfd != -1)
+  if (eff_uid && wi && wi->w_ptyfd != -1)
     {
       /* sigh, linux hackers made the helper functions void */
       if (SLOT_USED(u))