The bug fixed herein almost certainly means that PKINIT was never
working on Windows, since lib/hx509 uses rk_undumpdata() to read regular
files containing certificates and keys, but then since rk_undumpdata()
was using net_read(), that can't have worked. On Windows net_read()
insists on the FD being a socket, and because of winsock, the namespaces
of socket and file descriptors on Windows are distinct.
ca2467a4c4