base16_encode() will fail to generate a terminating NUL if the length
of the raw data is zero, since the loop calling sprintf() will never
execute.
Fix by explicitly terminating the result with a NUL.
Reported-by: Marin Hannache <git@mareo.fr>
Debugged-by: Marin Hannache <git@mareo.fr>
Tested-by: Marin Hannache <git@mareo.fr>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Provide a generic hex_decode() routine which can be shared between the
Base16 code and the "hex" and "hexhyp" settings parsers.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
Michael Brown