Bug when clicking on Media menu in back end

#1. Install the fresh one of newest version (at this moment is 3.1.3)
#2. In back end, click on Media, then warning messages as following:

Warning: explode() expects parameter 2 to be string, array given in E:\xampp\htdocs\wp313\wp-includes\query.php on line 2390

Warning: in_array() expects parameter 2 to be array, null given in E:\xampp\htdocs\wp313\wp-includes\query.php on line 2399

#3. Fix it in wp-includes\query.php
Replace line 2390:

$q_status = explode(‘,’, $q[‘post_status’]);

by these lines of code:

if ( is_array ( $q[‘post_status’] ))
$q_status = $q[‘post_status’];
else
$q_status = explode(‘,’, $q[‘post_status’]);

Have fun.