exit.sh: fix selinux mountpoint

Author: jtkot

functions/exit.sh

@@ -37,7 +37,7 @@ Exit ()
 			umount ${DIRECTORY} > /dev/null 2>&1 || true
 		done
 	else
-		for DIRECTORY in /dev/shm /dev/pts /dev /proc /selinux /sys /root/config
+		for DIRECTORY in /dev/shm /dev/pts /dev /proc /sys/fs/selinux /sys /root/config
 		do
 			umount -f chroot/${DIRECTORY} > /dev/null 2>&1 || true
 		done