[index.lucene] Typo calling getUser() on wrong object

Author: cdujeu

core/src/plugins/index.lucene/class.AjxpLuceneIndexer.php

@@ -455,7 +455,7 @@ public function updateNodeIndex($oldNode, $newNode = null, $copy = false, $recur
             if($oldNode == null){
                 $index =  $this->loadIndex($newNode->getRepositoryId(), true, $newNode->getUser());
             }else{
-                $index = $this->loadIndex($oldNode->getRepositoryId(), true, $newNode->getUser());
+                $index = $this->loadIndex($oldNode->getRepositoryId(), true, $oldNode->getUser());
             }
         }
         $this->setDefaultAnalyzer();