Fix for memory leak in loadparm.c - donated by Branko Cibej <branko.cibej@hermes.si>

Fix for memory leak in loadparm.c - donated by Branko Cibej <branko.cibej@hermes.si>
I checked this out and it looks ok - the bzero() in init_service() was
overwriting the pointers pservice->szService and pservice->copymap
that should have been freed in copy_service() the line later. This
fix frees pservice->szService and pservice->copymap inside free_service()
and sets them to zero so they won't be freed again.
Jeremy.