Fix crash when app is not yet authorized

remoting/android/java/src/org/chromium/chromoting/Chromoting.java

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chromoting;
 
 import android.accounts.Account;
 import android.accounts.AccountManager;
 import android.accounts.AccountManagerCallback;
 import android.accounts.AccountManagerFuture;
@@ skipping 128 matching lines @@
     }
 
     /** Called to initialize the action bar. */
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.chromoting_actionbar, menu);
         mRefreshButton = menu.findItem(R.id.actionbar_directoryrefresh);
         mAccountSwitcher = menu.findItem(R.id.actionbar_accountswitcher);
 
         Account[] usableAccounts = AccountManager.get(this).getAccountsByType(ACCOUNT_TYPE);
-        if (usableAccounts.length == 1 && mAccount.equals(usableAccounts[0])) {
+        if (usableAccounts.length == 1 && usableAccounts[0].equals(mAccount)) {
             // If we're using the only available account, don't offer account switching.
             // (If there are *no* accounts available, clicking this allows you to add a new one.)
             mAccountSwitcher.setEnabled(false);
         }
 
         if (mAccount == null) {
             // If no account has been chosen, don't allow the user to refresh the listing.
             mRefreshButton.setEnabled(false);
         } else {
             // If the user has picked an account, show its name directly on the account switcher.
@@ skipping 254 matching lines @@
                         Toast.LENGTH_LONG).show();
 
                 // Close the application.
                 finish();
             }
 
             return target;
         }
     }
 }