From b2459d1222047dd54bcea1801398a1a78954fbe7 Mon Sep 17 00:00:00 2001
From: Sebastian Sdorra <sebastian.sdorra@cloudogu.com>
Date: Sun, 6 Nov 2011 18:14:58 +0100
Subject: [PATCH] fix possible NullPointerException

---
 .../scm/plugin/PluginInformationComparator.java | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/scm-core/src/main/java/sonia/scm/plugin/PluginInformationComparator.java b/scm-core/src/main/java/sonia/scm/plugin/PluginInformationComparator.java
index cdb0777cae..fa9fb606b9 100644
--- a/scm-core/src/main/java/sonia/scm/plugin/PluginInformationComparator.java
+++ b/scm-core/src/main/java/sonia/scm/plugin/PluginInformationComparator.java
@@ -78,8 +78,21 @@ public class PluginInformationComparator
 
       if (result == 0)
       {
-        result = plugin.getState().getCompareValue()
-                 - other.getState().getCompareValue();
+        PluginState state = plugin.getState();
+        PluginState otherState = other.getState();
+
+        if ((state != null) && (otherState != null))
+        {
+          result = state.getCompareValue() - otherState.getCompareValue();
+        }
+        else if ((state == null) && (otherState != null))
+        {
+          result = 1;
+        }
+        else if ((state != null) && (otherState == null))
+        {
+          result = -1;
+        }
       }
     }