Fix klogd applet compilation on the FreeBSD

FreeBSD also using /dev/klog, see syslogd(8)

Signed-off-by: Alex Samorukov <samm@os2.kiev.ua>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

sysklogd/klogd.c

@@ -100,7 +100,7 @@ static void klogd_close(void)
 #else
 
 # ifndef _PATH_KLOG
-#  ifdef __GNU__
+#  if defined(__GNU__) || defined (__FreeBSD__)
 #   define _PATH_KLOG "/dev/klog"
 #  else
 #   error "your system's _PATH_KLOG is unknown"