lib/, src/: Always pass NULL to time(2)

See time(2):

BUGS
     Error returns from this system  call  are  indistinguishable  from
     successful  reports  that  the  time  is  a few seconds before the
     Epoch, so the C library wrapper function never sets errno as a re‐
     sult of this call.

     The tloc argument is obsolescent and should always be NULL in  new
     code.  When tloc is NULL, the call cannot fail.

Fixes: 45c6603cc8 ("[svn-upgrade] Integrating new upstream version, shadow (19990709)")
Signed-off-by: Alejandro Colomar <alx@kernel.org>

src/faillog.c

@@ -154,7 +154,7 @@ static void print_one (/*@null@*/const struct passwd *pw, bool force)
 		return;
 	}
 
-	(void) time(&now);
+	now = time(NULL);
 
 	/* Filter out entries that do not match with the -t option */
 	if (tflg && ((now - fl.fail_time) > seconds)) {