From 103360c35e307debee433b21e58aeeb26298a0d2 Mon Sep 17 00:00:00 2001
From: Alex Birkett <alex@birkett.co.uk>
Date: Mon, 2 Feb 2015 17:33:25 +0100
Subject: [PATCH] Fix NullPointerException when tag.other is null

---
 src/main/java/no/birkett/kiwi/Solver.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/no/birkett/kiwi/Solver.java b/src/main/java/no/birkett/kiwi/Solver.java
index c150020..ccb6522 100644
--- a/src/main/java/no/birkett/kiwi/Solver.java
+++ b/src/main/java/no/birkett/kiwi/Solver.java
@@ -219,7 +219,7 @@ public class Solver {
             if (row.coefficientFor(tag.marker) < 0.0)
                 return tag.marker;
         }
-        if (tag.other.getType() == Symbol.Type.SLACK || tag.other.getType() == Symbol.Type.ERROR) {
+        if (tag.other != null && (tag.other.getType() == Symbol.Type.SLACK || tag.other.getType() == Symbol.Type.ERROR)) {
             if (row.coefficientFor(tag.other) < 0.0)
                 return tag.other;
         }