Fixed poll issue

diff --git a/wcfsetup/install/files/lib/data/poll/Poll.class.php b/wcfsetup/install/files/lib/data/poll/Poll.class.php
index b701105ce2bd1dc64067b2a4c9f37d8a64523e0e..8f728ff44159733c3f0390837a9ae997c1f6d47b 100644 (file)
--- a/wcfsetup/install/files/lib/data/poll/Poll.class.php
+++ b/wcfsetup/install/files/lib/data/poll/Poll.class.php
@@ -117,7 +117,7 @@ class Poll extends DatabaseObject {
         * @return      boolean
         */
        public function isFinished() {
-               return $this->endTime <= TIME_NOW;
+               return ($this->endTime && $this->endTime <= TIME_NOW);
        }
        
        /**