len = strlen(v->prop[i].value);
/* if we have some untagged QP, detect it here. */
if (!is_qp && (strstr(v->prop[i].value, "=?")!=NULL))
- utf8ify_rfc822_string(v->prop[i].value);
+ utf8ify_rfc822_string(&v->prop[i].value);
if (is_qp) {
// %ff can become 6 bytes in utf8