V1.0.2: Fix another warning

app/code/community/OpenTools/Ordernumber/Helper/Data.php

@@ -180,7 +180,7 @@ class OpenTools_Ordernumber_Helper_Data extends Mage_Core_Helper_Abstract
         $customer = $order->getCustomer();
         $address = $order->getShippingAddress();
         $store = $order->getStore();
-// $this->logitem("Order: ", $order);
+// $this->logitem("customvars: ", $customvars);
         foreach ($customvars as $c) {
             $conditionvar = $c['conditionvar'];
 

app/code/community/OpenTools/Ordernumber/Model/Observer.php

@@ -123,6 +123,8 @@ class OpenTools_Ordernumber_Model_Observer extends Mage_Core_Model_Abstract
             }
             if ($customvars) {
                 $customvars = unserialize($customvars);
+            } else {
+                $customvars = array();
             }
 // Mage::Log('customvars: '.print_r($customvars,1), null, 'ordernumber.log');