uptr->scheme = "http";
uptr->scheme = "";
char *mpxs_apr_uri_unparse(pTHX_                           apr_uri_t *uptr,                           unsigned flags){    /* XXX: check that my patch was actually applied in apr v9.3 */#if APR_MINOR_VERSION == 9 && APR_PATCH_VERSION < 3    /* apr < 0.9.3 segfaults if hostname is set, but scheme is not */    if (uptr->hostname && !uptr->scheme) {        uptr->scheme = "http";    }#endif        return apr_uri_unparse(((modperl_uri_t *)uptr)->pool,                           uptr, flags);}