ZP-817 Unsetting private task in Outlook is not saved on the server.

Released under the Affero GNU General Public License (AGPL) version 3.

src/backend/zarafa/mapiprovider.php

@@ -1589,9 +1589,7 @@ class MAPIProvider {
             $recurrence->setRecurrence($recur);
         }
 
-        if (isset($task->sensitivity) && $task->sensitivity == SENSITIVITY_PRIVATE) {
-            $props[$taskprops["private"]] = true;
-        }
+        $props[$taskprops["private"]] = (isset($task->sensitivity) && $task->sensitivity == SENSITIVITY_PRIVATE) ? true : false;
 
         //open addresss book for user resolve to set the owner
         $addrbook = $this->getAddressbook();