From 3230df32bf15f687ede04cb73f68a422ade6f2e8 Mon Sep 17 00:00:00 2001
From: John Dennis Casey <jdcasey@apache.org>
Date: Thu, 1 Dec 2005 17:04:09 +0000
Subject: [PATCH] PR: MNG-1721

Fixing NPE when error parameter is null.


git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@350275 13f79535-47bb-0310-9956-ffa450edef68
---
 .../apache/maven/usability/diagnostics/DiagnosisUtils.java   | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/maven-error-diagnostics/src/main/java/org/apache/maven/usability/diagnostics/DiagnosisUtils.java b/maven-error-diagnostics/src/main/java/org/apache/maven/usability/diagnostics/DiagnosisUtils.java
index 8c4b4511e7..525640ca8c 100644
--- a/maven-error-diagnostics/src/main/java/org/apache/maven/usability/diagnostics/DiagnosisUtils.java
+++ b/maven-error-diagnostics/src/main/java/org/apache/maven/usability/diagnostics/DiagnosisUtils.java
@@ -80,6 +80,11 @@ public final class DiagnosisUtils
     public static void appendRootCauseIfPresentAndUnique( Throwable error, StringBuffer message,
                                                           boolean includeTypeInfo )
     {
+        if ( error == null )
+        {
+            return;
+        }
+        
         Throwable root = getRootCause( error );
 
         if ( root != null && !root.equals( error ) )