Description:
------------
LDAP_OPT_TIMELIMIT and LDAP_OPT_DEREF's original values weren't
saved properly because of a bug introduced when copy and pasting.

This lead to the original timeout being changed
when specifying a temporary override (e.g. for ldap_search(..., $timeout))

(Discovered on PHP-5.6.12 on Centos 6.5, using openLDAP libraries)
(Fixed in https://github.com/php/php-src/pull/1512)
(PHP-5.5 and 5.4 are also affected, but a separate patch would be needed for 5.4 because of merge conflicts)

Test script:
---------------
https://github.com/TysonAndre/php-src/blob/ldap-fix-saving-timeout-and-dereference/ext/ldap/tests/ldap_search_overrides.phpt

It can be simplified to:

$link = ldap_connect($host);
ldap_set_option($link, LDAP_OPT_DEREF, LDAP_DEREF_SEARCHING);
ldap_set_option($link, LDAP_OPT_SIZELIMIT, 123);
ldap_set_option($link, LDAP_OPT_TIMELIMIT, 33);
ldap_search($link, $base, $filter, array(), null, 111, 222, LDAP_DEREF_NEVER);
var_dump(
    ldap_get_option($link, LDAP_OPT_DEREF, $option),
    $option,
    ldap_get_option($link, LDAP_OPT_SIZELIMIT, $option),
    $option,
    ldap_get_option($link, LDAP_OPT_TIMELIMIT, $option),
    $option
);


Expected result:
----------------
After executing ldap_search with overrides, I expect ldap_get_option to return the original values of LDAP_OPT_TIMELIMIT and LDAP_OPT_DEREF set by ldap_set_option.

Actual result:
--------------
The value of ldap_get_option($link, LDAP_OPT_DEREF, $option) was clobbered by the $sizelimit override (111)
The value of ldap_get_option($link, LDAP_OPT_TIMELIMIT, $option) was clobbered by the $sizelimit override (111).