message: fix cookie value check error
diff: @@ -405,7 +405,7 @@ static void http_parse_cookie(zval *array, const char *at, size_t length)
  else if (state == 1 && *_c == ';')
  {
  vlen = i - j;
  - if (vlen >= SW_HTTP_COOKIE_KEYLEN)
  + if (vlen >= SW_HTTP_COOKIE_VALLEN)
  {
  swWarn("cookie value is too large.");
  return;
  @@ -439,7 +439,7 @@ static void http_parse_cookie(zval *array, const char *at, size_t length)
  {
  vlen = i - j;
  keybuf[klen - 1] = 0;
  - if (vlen >= SW_HTTP_COOKIE_KEYLEN)
  + if (vlen >= SW_HTTP_COOKIE_VALLEN)
  {
  swWarn("cookie value is too large.");
  return;
  