From 9ab3b6d58eced4dede7921f534ff774b5d02bb6e Mon Sep 17 00:00:00 2001
From: timporter <tporter@gmail.com>
Date: Wed, 29 May 2013 18:56:22 +0200
Subject: [PATCH] Update UnusedPrivateField.php

---
 src/main/php/PHP/PMD/Rule/UnusedPrivateField.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/php/PHP/PMD/Rule/UnusedPrivateField.php b/src/main/php/PHP/PMD/Rule/UnusedPrivateField.php
index 0d492c74c..7d542abfc 100644
--- a/src/main/php/PHP/PMD/Rule/UnusedPrivateField.php
+++ b/src/main/php/PHP/PMD/Rule/UnusedPrivateField.php
@@ -202,6 +202,9 @@ protected function isValidPropertyNode(PHP_PMD_Node_ASTNode $node = null)
                 return false;
             }
             $parent = $parent->getParent();
+            if (is_null($parent)) {
+                   return false;
+            }
         }
         return true;
     }