Lockdown should only augment connected networks.

Bug: 7148397
Change-Id: I20e2194c874544b272b9ec8b63391d91b0a22f49

Author: jsharkey

services/java/com/android/server/net/LockdownVpnTracker.java

@@ -268,9 +268,11 @@ public void onVpnStateChanged(NetworkInfo info) {
     }
 
     public NetworkInfo augmentNetworkInfo(NetworkInfo info) {
-        final NetworkInfo vpnInfo = mVpn.getNetworkInfo();
-        info = new NetworkInfo(info);
-        info.setDetailedState(vpnInfo.getDetailedState(), vpnInfo.getReason(), null);
+        if (info.isConnected()) {
+            final NetworkInfo vpnInfo = mVpn.getNetworkInfo();
+            info = new NetworkInfo(info);
+            info.setDetailedState(vpnInfo.getDetailedState(), vpnInfo.getReason(), null);
+        }
         return info;
     }