non static method JRouter::encode Segments() router.php line 818

Hello,

Thank you for your hardwork and thank you for giving up your time to help.

Specs
Joomla 3.2
PHP 5.3
Apache 2.4
Centos 6.4 Minimal - Hyper-V

EasyDiscuss
Default Installation
3.1.8872
No plugins installed
No modules installed

Error
REPRODUCE
1. install joomla 3.2 default
2. install easydiscuss default
3. turn on native SEF
4. navigate to front end home page and the error will be there

non static method JRouter::encode Segments() router.php line 818

My Fix

router.php

On line 813 redact/rem out 'static':

813 public static function encodeSegments($segments) => changes to

813 public function encodeSegments($segments)

MY QUESTION
What is the correct way to fix this error?