Minor code tidy

Author: Mark Railton

src/models/TalkMapper.php

@@ -369,9 +369,9 @@ public function createTalk(array $data)
     {
         // TODO map from the field mappings in getVerboseFields()
         $sql = '
-          insert into talks (event_id, talk_title, talk_desc, 
+          insert into talks (event_id, talk_title, talk_desc,
             lang, date_given, duration)
-            values (:event_id, :talk_title, :talk_description, 
+            values (:event_id, :talk_title, :talk_description,
             (select ID from lang where lang_name = :language),
               :date, :duration)
          ';