[Plugin: WP-Polls] Error if no polls exists

If there are no questions display_pollvote in wp-polls.php will generate an error notice everytime $poll_question is used in the lines below.

When using the custom code or wp-polls as a widget there should be a default action if no active polls exist. A choice could be not to show anything or give a message that there are no polls.

http://ww.wp.xz.cn/extend/plugins/wp-polls/