Tri.be event calendar pre_get_posts fix

tec_pre_get_posts_fix.php

<?php

/**
 *
 * In cases where pre_get_posts changes the 'post_type' query var to post (or another post type)
 * if the original query 'post_type' is 'tribe_events' then reset so that the calendar list views
 * continue to work properly.
 * 
 */

add_filter('pre_get_posts', 'tribe_fix_pre_get_posts_reset');
function tribe_fix_pre_get_posts_reset($query){
	if( isset($query->query['post_type']) && $query->query['post_type'] == TribeEvents::POSTTYPE) {
		$query->set('post_type',TribeEvents::POSTTYPE);
	}
	return $query;
}