accept /0 mask in addr_pton(). from Niels Provos <provos@monkey.org>
accept /0 mask in addr_pton(). from Niels Provos <provos@monkey.org>

jncornett/libdnet,jncornett/libdnet,wtfbbqhax/libdnet,kbandla/libdnet,kbandla/libdnet,wtfbbqhax/libdnet,wtfbbqhax/libdnet,jncornett/libdnet,kbandla/libdnet