Description:
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In php7.4 the functions "intl_get_error_code", "intl_get_error_message" do not return correct error code/message despite "idn_to_ascii" returns FALSE.

The real error code can be retrieved from 'idna_info' array passed to "idn_to_ascii" function. But "intl_get_error_code", "intl_get_error_message" should also work for the backward compatibility.

Test script:
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// PHP 7.3.x
$result=idn_to_ascii('.pm--domain.com', IDNA_DEFAULT, INTL_IDNA_VARIANT_2003);
echo intl_get_error_code(); // 66567
echo intl_get_error_message(); // idn_to_ascii: cannot convert to ASCII: U_IDNA_ZERO_LENGTH_LABEL_ERROR
// PHP 7.4.x
$result=idn_to_ascii('.pm--domain.com.', IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46, $data);
echo intl_get_error_code(); // 0
echo intl_get_error_message(); // U_ZERO_ERROR
var_dump($data);
/**array(3) {
  ["result"]=>
  string(16) ".pm--domain.com."
  ["isTransitionalDifferent"]=>
  bool(false)
  ["errors"]=>
  int(33)
}*/

Expected result:
----------------
echo intl_get_error_code(); // the last error code should be returned
echo intl_get_error_message(); // the last error message should be returned