polylang support for relevanssi

// thanks to rvencu
function relevanssi_wpml_filter($data) {
	$use_filter = get_option('relevanssi_wpml_only_current');
	if ('on' == $use_filter) {
		//save current blog language
		$lang = get_bloginfo('language');
		$filtered_hits = array();
		foreach ($data[0] as $hit) {
			if (isset($hit->blog_id)) {
				switch_to_blog($hit->blog_id);
			}
			global $sitepress;
			if (function_exists('icl_object_id') && !function_exists('pll_is_translated_post_type')) {
				if ($sitepress->is_translated_post_type($hit->post_type)) {
				    if ($hit->ID == icl_object_id($hit->ID, $hit->post_type,false,ICL_LANGUAGE_CODE))
				        $filtered_hits[] = $hit;
				}
				else {
					$filtered_hits[] = $hit;
				}
			}
			elseif (function_exists('icl_object_id') && function_exists('pll_is_translated_post_type')) {
				if (pll_is_translated_post_type($hit->post_type)) {
					global $polylang;
					if($polylang->model->get_post_language($hit->ID)->slug == ICL_LANGUAGE_CODE){
						$filtered_hits[] = $hit;
					}
				    else if ($hit->ID == icl_object_id($hit->ID, $hit->post_type,false,ICL_LANGUAGE_CODE)){
					    $filtered_hits[] = $hit;
				    }
				}
				else {
					$filtered_hits[] = $hit;
				}
			}

			// if there is no WPML but the target blog has identical language with current blog,
			// we use the hits. Note en-US is not identical to en-GB!
			elseif (get_bloginfo('language') == $lang) {
				$filtered_hits[] = $hit;
			}
			if (isset($hit->blog_id)) {
				restore_current_blog();
			}
		}
		return array($filtered_hits, $data[1]);
	}
	return $data;
}