From 34e7de389cc17093adac688eec5985d12f3a2615 Mon Sep 17 00:00:00 2001
From: Fredrik Osterlind <fros@sics.se>
Date: Wed, 2 May 2012 14:07:44 +0200
Subject: [PATCH] avoid exception when cooja runs in testmode

---
 tools/cooja/java/se/sics/cooja/plugins/LogScriptEngine.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/cooja/java/se/sics/cooja/plugins/LogScriptEngine.java b/tools/cooja/java/se/sics/cooja/plugins/LogScriptEngine.java
index 2e867da80..9bdd615e7 100644
--- a/tools/cooja/java/se/sics/cooja/plugins/LogScriptEngine.java
+++ b/tools/cooja/java/se/sics/cooja/plugins/LogScriptEngine.java
@@ -116,6 +116,9 @@ public class LogScriptEngine {
   /* Only called from the simulation loop */
   private void stepScript() {
     /* Release script - halt simulation */
+    if (semaphoreScript == null || semaphoreSim == null) {
+      return;
+    }
     semaphoreScript.release();
 
     /* ... script executing ... */