KeyStore: stop using state()

Change-Id: I721974fd95f8d1ab06a3fd1bbb4c9b4d9d1d7752

services/java/com/android/server/ConnectivityService.java

@@ -3384,7 +3384,7 @@ public class ConnectivityService extends IConnectivityManager.Stub {
         // Tear down existing lockdown if profile was removed
         mLockdownEnabled = LockdownVpnTracker.isEnabled();
         if (mLockdownEnabled) {
-            if (mKeyStore.state() != KeyStore.State.UNLOCKED) {
+            if (!mKeyStore.isUnlocked()) {
                 Slog.w(TAG, "KeyStore locked; unable to create LockdownTracker");
                 return false;
             }