tree 19be355847403f491ce51f1b96a5471c98e58b53
parent 047baaba3819f9c98c1e253ba6d37dd5a20fd435
author Michael Brown <mcb30@ipxe.org> 1413561045 +0100
committer Michael Brown <mcb30@ipxe.org> 1413561151 +0100

[efi] Check for presence of UNDI in NII protocol

iPXE itself exposes a dummy NII protocol with no UNDI.  Avoid
potentially dereferencing a NULL pointer by checking for a non-zero
UNDI address.

Signed-off-by: Michael Brown <mcb30@ipxe.org>