Add null pointer check

Change-Id: I5f364e8010d61162ed57148658965b9730491050
diff --git a/src/com/android/settings/ResetNetwork.java b/src/com/android/settings/ResetNetwork.java
index 1fb27d3..990f485 100644
--- a/src/com/android/settings/ResetNetwork.java
+++ b/src/com/android/settings/ResetNetwork.java
@@ -100,7 +100,7 @@
 
     private void showFinalConfirmation() {
         Bundle args = new Bundle();
-        if (mSubscriptions.size() > 0) {
+        if (mSubscriptions != null && mSubscriptions.size() > 0) {
             int selectedIndex = mSubscriptionSpinner.getSelectedItemPosition();
             SubscriptionInfo subscription = mSubscriptions.get(selectedIndex);
             args.putInt(PhoneConstants.SUBSCRIPTION_KEY, subscription.getSubscriptionId());