I did suggest a quick fix a month ago but I don't have permission to commit in the base code. You only need to comment out those lines in parse_cmdline function:
if (opt_algo == ALGO_HEAVY && opt_vote == 9999) {
fprintf(stderr, "%s: Heavycoin hash requires block reward vote parameter (see --vote)\n",
argv[0]);
show_usage_and_exit(1);
}