Avoid warnings if $poll is not set, probably when there's been a problem connecting to Polldaddy (new users mostly) http://wordpress.org/support/topic/php-throwing-notices?replies=1


git-svn-id: https://plugins.svn.wordpress.org/polldaddy/trunk@879664 b8457f37-d9ea-0310-8a92-e5e31aec5664