fix readdressing bug introduced in r69 that zeroes the hip_a->rekey structure  when a new SPI and keymat index has already been chosen
fix readdressing bug introduced in r69 that zeroes the hip_a->rekey structure
 when a new SPI and keymat index has already been chosen


git-svn-id: ba3668999917d5a6564fe2b4aca77aa8f642c87d@74 4c5cb64f-9889-4596-9799-84b02dc3effa

rektide/openhip,eternaleye/openhip,eternaleye/openhip,rektide/openhip,eternaleye/openhip,eternaleye/openhip,rektide/openhip,rektide/openhip