From 015d25a4555d0f84d5805854ee912ea5f8894def Mon Sep 17 00:00:00 2001
From: Maxim Medvedev <maxim.medvedev@jetbrains.com>
Date: Sat, 3 Jul 2010 12:35:02 +0400
Subject: [PATCH]  IDEA-56121    Groovy: NPE at
 ConvertParameterToMapEntryIntention$4.run() on "Convert parameter to map
 entry" intention applied to method/closure invoked with omitted parentheses

---
 .../src/com/intellij/psi/impl/source/tree/TreeUtil.java        | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/psi/impl/source/tree/TreeUtil.java b/platform/lang-impl/src/com/intellij/psi/impl/source/tree/TreeUtil.java
index 3deeb25a69a2..864edb0baca9 100644
--- a/platform/lang-impl/src/com/intellij/psi/impl/source/tree/TreeUtil.java
+++ b/platform/lang-impl/src/com/intellij/psi/impl/source/tree/TreeUtil.java
@@ -73,7 +73,8 @@ public class TreeUtil {
   }
 
   @Nullable
-  public static ASTNode skipElementsBack(ASTNode element, TokenSet types) {
+  public static ASTNode skipElementsBack(@Nullable ASTNode element, TokenSet types) {
+    if (element == null) return null;
     if (!types.contains(element.getElementType())) return element;
 
     ASTNode parent = element.getTreeParent();