Log Message:
lang/php73: update to 7.3.16

Update php73 to 7.3.16.

19 Mar 2020, PHP 7.3.16

- Core:
  . Fixed bug #63206 (restore_error_handler does not restore previous errors
    mask). (Mark Plomer)

- COM:
  . Fixed bug #66322 (COMPersistHelper::SaveToFile can save to wrong location).
    (cmb)
  . Fixed bug #79242 (COM error constants don't match com_exception codes on
    x86). (cmb)
  . Fixed bug #79248 (Traversing empty VT_ARRAY throws com_exception). (cmb)
  . Fixed bug #79299 (com_print_typeinfo prints duplicate variables). (Litiano
    Moura)
  . Fixed bug #79332 (php_istreams are never freed). (cmb)
  . Fixed bug #79333 (com_print_typeinfo() leaks memory). (cmb)

- DOM:
  . Fixed bug #77569: (Write Access Violation in DomImplementation). (Nikita,
    cmb)
  . Fixed bug #79271 (DOMDocumentType::$childNodes is NULL). (cmb)

- Enchant:
  . Fixed bug #79311 (enchant_dict_suggest() fails on big endian architecture).
    (cmb)

- EXIF:
  . Fixed bug #79282 (Use-of-uninitialized-value in exif). (CVE-2020-7064)
    (Nikita)

- MBstring:
  . Fixed bug #79371 (mb_strtolower (UTF-32LE): stack-buffer-overflow at
    php_unicode_tolower_full). (CVE-2020-7065) (cmb)

- MySQLi:
  . Fixed bug #64032 (mysqli reports different client_version). (cmb)

- PCRE:
  . Fixed bug #79188 (Memory corruption in preg_replace/preg_replace_callback
    and unicode). (Nikita)

- PDO_ODBC:
  . Fixed bug #79038 (PDOStatement::nextRowset() leaks column values). (cmb)

- Reflection:
  . Fixed bug #79062 (Property with heredoc default value returns false for
    getDocComment). (Nikita)

- SQLite3:
  . Fixed bug #79294 (::columnType() may fail after SQLite3Stmt::reset()). (cmb)

- Standard:
  . Fixed bug #79329 (get_headers() silently truncates after a null byte).
    (CVE-2020-7066) (cmb)
  . Fixed bug #79254 (getenv() w/o arguments not showing changes). (cmb)
  . Fixed bug #79265 (Improper injection of Host header when using fopen for
    http requests). (Miguel Xavier Penha Neto)