From 2da95deb4e044b41973ac42fa1c39620d3a49ebb Mon Sep 17 00:00:00 2001
From: aclement <aclement>
Date: Thu, 5 Aug 2004 10:39:22 +0000
Subject: guard for NPE.

---
 asm/src/org/aspectj/asm/internal/ProgramElement.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/asm/src/org/aspectj/asm/internal/ProgramElement.java b/asm/src/org/aspectj/asm/internal/ProgramElement.java
index 913a1cebc..ef4b28507 100644
--- a/asm/src/org/aspectj/asm/internal/ProgramElement.java
+++ b/asm/src/org/aspectj/asm/internal/ProgramElement.java
@@ -353,10 +353,12 @@ public class ProgramElement implements IProgramElement {
 //	}
 
 	public IProgramElement walk(HierarchyWalker walker) {
+		if (children!=null) {
 		for (Iterator it = children.iterator(); it.hasNext(); ) {
 			IProgramElement child = (IProgramElement)it.next();
 			walker.process(child);	
 		} 
+		}
 		return this;
 	}
 	
-- 
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