From 445421051c5d364839d3bcdf2fa35e3ecd06e9bc Mon Sep 17 00:00:00 2001
From: Stephen Connolly <stephen.alan.connolly@gmail.com>
Date: Mon, 6 Jan 2014 10:43:51 +0000
Subject: [PATCH] potential NPE

---
 .../org/apache/maven/artifact/versioning/ComparableVersion.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/maven-artifact/src/main/java/org/apache/maven/artifact/versioning/ComparableVersion.java b/maven-artifact/src/main/java/org/apache/maven/artifact/versioning/ComparableVersion.java
index 6f066140dc..e79b238561 100644
--- a/maven-artifact/src/main/java/org/apache/maven/artifact/versioning/ComparableVersion.java
+++ b/maven-artifact/src/main/java/org/apache/maven/artifact/versioning/ComparableVersion.java
@@ -309,7 +309,7 @@ public class ComparableVersion
                         Item r = right.hasNext() ? right.next() : null;
 
                         // if this is shorter, then invert the compare and mul with -1
-                        int result = l == null ? -1 * r.compareTo( l ) : l.compareTo( r );
+                        int result = l == null ? ( r == null ? 0 : -1 * r.compareTo( l ) ) : l.compareTo( r );
 
                         if ( result != 0 )
                         {