Description:
------------
Mailparse 3.1.1

Appears embedded quoted strings simply lose their "s when processed by mailparse_rfc822_parse_addresses.


Test script:
---------------
<?php

var_dump(mailparse_rfc822_parse_addresses('"Smith, Robert \"Bob\"" <user@domain.org>'));

Expected result:
----------------
array(1) {
  [0] =>
  array(3) {
    'display' =>
    string(21) "Smith, Robert \ Bob\ "
    'address' =>
    string(15) "user@domain.org"
    'is_group' =>
    bool(false)
  }
}

Actual result:
--------------
array(1) {
  [0] =>
  array(3) {
    'display' =>
    string(21) "Smith, Robert \"Bob\""
    'address' =>
    string(15) "user@domain.org"
    'is_group' =>
    bool(false)
  }
}

The display string without escaping could also make sense.