From e26d0dc26cbde8d4619fc03d80afaf024c42e6af Mon Sep 17 00:00:00 2001
From: Alexey Kudravtsev <cdr@intellij.com>
Date: Wed, 30 Nov 2011 17:17:45 +0400
Subject: [PATCH] EA-31825 - IAE:
 RecursiveTreeElementWalkingVisitor$.elementFinished

---
 platform/util/src/com/intellij/util/WalkingState.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/platform/util/src/com/intellij/util/WalkingState.java b/platform/util/src/com/intellij/util/WalkingState.java
index 5904db52b624..9106b72fa6d2 100644
--- a/platform/util/src/com/intellij/util/WalkingState.java
+++ b/platform/util/src/com/intellij/util/WalkingState.java
@@ -89,7 +89,9 @@ public class WalkingState<T> {
       }
       element = myWalker.getParent(element);
     }
-    elementFinished(element);
+    if (element != null) {
+      elementFinished(element);
+    }
     return null;
   }