From 6ca7ee6c780821a31ca3dc27e86528bca824903a Mon Sep 17 00:00:00 2001
From: prabathabey <prabathabey@git.com>
Date: Wed, 25 Mar 2015 19:35:26 +0530
Subject: [PATCH] Fixing NPE thrown while shutting down the MDM server

---
 .../MobileDeviceManagementServiceComponent.java     | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/main/java/org/wso2/carbon/device/mgt/mobile/internal/MobileDeviceManagementServiceComponent.java b/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/main/java/org/wso2/carbon/device/mgt/mobile/internal/MobileDeviceManagementServiceComponent.java
index 1dc22c977..69131f4ed 100644
--- a/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/main/java/org/wso2/carbon/device/mgt/mobile/internal/MobileDeviceManagementServiceComponent.java
+++ b/components/device-mgt/org.wso2.carbon.device.mgt.mobile.impl/src/main/java/org/wso2/carbon/device/mgt/mobile/internal/MobileDeviceManagementServiceComponent.java
@@ -102,10 +102,15 @@ public class MobileDeviceManagementServiceComponent {
             log.debug("De-activating Mobile Device Management Service Component");
         }
         try {
-            androidServiceRegRef.unregister();
-            iOSServiceRegRef.unregister();
-            windowsServiceRegRef.unregister();
-            serverStartupObserverRef.unregister();
+            if (androidServiceRegRef != null) {
+                androidServiceRegRef.unregister();
+            }
+            if (iOSServiceRegRef != null) {
+                iOSServiceRegRef.unregister();
+            }
+            if (windowsServiceRegRef != null) {
+                windowsServiceRegRef.unregister();
+            }
 
 			if (log.isDebugEnabled()) {
 				log.debug(