checkprotoprefix(struct Curl_easy *data, struct connectdata *conn,
                 const char *s, size_t len)
{
#ifndef CURL_DISABLE_RTSP
  if(conn->handler->protocol & CURLPROTO_RTSP)
    return checkrtspprefix(data, s, len);
#else
  (void)conn;
#endif /* CURL_DISABLE_RTSP */

  return checkhttpprefix(data, s, len);
}
checkprotoprefix(struct Curl_easy *data, struct connectdata *conn,
                 const char *s, size_t len)
{
#ifndef CURL_DISABLE_RTSP
  if(conn->handler->protocol & CURLPROTO_RTSP)
    return checkrtspprefix(data, s, len);
#else
  (void)conn;
#endif  

  return checkhttpprefix(data, s, len);
}