[Plugin: Pinterest RSS Widget] Possible fix for – PHP Fatal error: Call to undefined method WP_Erro

Im getting this error too often in my error log

PHP Fatal error: Call to undefined method WP_Error::get_item_quantity() in /xxxxxxx/xxxxxx/xxxxxx/wp-content/plugins/pinterest-rss-widget/pinterest-rss-widget.php on line 64

that contains the following code:

$maxitems = $rss->get_item_quantity((int)$maxfeeds);

after a little research on this topic, i found this

http://wordpress.org/support/topic/atal-error-call-to-undefined-method-wp_errorget_item_quantity

Same problem but with another rss the recomendation is to add

rss->set_timeout(60);
$maxitems = $rss->get_item_quantity((int)$maxfeeds);

Is this a solution or you recommend another alterntive?

http://wordpress.org/extend/plugins/pinterest-rss-widget/