release 2.3.10.2: fix XSS vulnerability for poll parameter

in OIDC Session Management RP iframe; CSNC-2019-001; thanks Mischa
Bachmann

Signed-off-by: Hans Zandbelt <hans.zandbelt@zmartzone.eu>
static char *oidc_get_state_cookie_name(request_rec *r, const char *state) {
	return apr_psprintf(r->pool, "%s%s", OIDC_STATE_COOKIE_PREFIX, state);
}

static char *oidc_get_state_cookie_name(request_rec *r, const char *state) {
	return apr_psprintf(r->pool, "%s%s", OIDC_STATE_COOKIE_PREFIX, state);
}
