fix a system crash that occurs when ChooseAccountActivity is

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        if (savedInstanceState == null) {

        mAccounts = getIntent().getParcelableArrayExtra(AccountManager.KEY_ACCOUNTS);

        mAccountManagerResponse =

                getIntent().getParcelableExtra(AccountManager.KEY_ACCOUNT_MANAGER_RESPONSE);

        } else {

            mAccounts = savedInstanceState.getParcelableArray(AccountManager.KEY_ACCOUNTS);

            mAccountManagerResponse =

                    savedInstanceState.getParcelable(AccountManager.KEY_ACCOUNT_MANAGER_RESPONSE);

        // KEY_ACCOUNTS is a required parameter

        if (mAccounts == null) {

            setResult(RESULT_CANCELED);

            finish();

            return;

        }

        String[] mAccountNames = new String[mAccounts.length];