Follow up to r1879074: don't let dav_process_if_header() go above root.
And fall through as "/".
@@ -665,6 +665,7 @@ static dav_error * dav_process_if_header(request_rec *r, dav_if_header **p_ih)
/* clean up the URI a bit */
if (!ap_normalize_path(parsed_uri.path,
+ AP_NORMALIZE_NOT_ABOVE_ROOT |
AP_NORMALIZE_DECODE_UNRESERVED)) {
return dav_new_error(r->pool, HTTP_BAD_REQUEST,
DAV_ERR_IF_TAGGED, rv,
