/* Calculate a hash key for the supplied RSVP request. The internally allocated conversation-id is unique, so we just use that.  */
static guint rsvp_hash(gconstpointer k)
/* Calculate a hash key for the supplied RSVP request. The internally allocated conversation-id is unique, so we just use that.  */
static guint rsvp_hash(gconstpointer k)
{
    const struct rsvp_request_key *key = (const struct rsvp_request_key*) k;
    return key->conversation;
}