Thread:Extension talk:SphinxSearch/MW 1.23.3 vs. SphinxSearch 0.8.5 or 0.9.0

I did fresh install of MW 1.23.3 and installed SpinchSearch 0.9.0 and sphinx-2.1.8. Search is working from Linux and MediaWiki but in MW I am getting error on page: Same error takes place also with SpinchSearch 0.8.5 and sphinx-2.1.3 with MV1.23.3.
 * Notice: Undefined property: SphinxMWSearch::$showRedirects in /opt/lampp/htdocs/mediawiki/extensions/SphinxSearch/SphinxMWSearch.php on line 157

In earlier version of MW 1.22.10 I can find definition of variable showRedirects in
 * mediawiki/includes/search/SearchEngine.php:

In MW 1.23.3 variable is not defined there at all... or elsewhere either.

How should I fix this?
 * should I comment out lines 157-159 of SphinxMWSearch.php

or
 * should I add definition of showRedirects back into file SearchEngine.php of MW

MW 1.22.3 PHP 5.5.15 MySQL Ver 14.14 Distrib 5.6.20 CentOS release 6.4 (x64) xampp 1.8.3-5 (x64)