For scope 'wl.offline_access' logout with [liveClient logout] completely from service, not just clear cookies

[SanCHEESE]

Currently logout is simply clearing cookies and not logging out from OneDrive.

If we grant access to app with scopes including "wl.offline_access" and after we call [liveClient logout], we can sign in again without entering password and granting access to app.

By removing scope "wl.offline_access" we need to grant access (press YES/NO in webView) for app every first upload/quiery/sign in operation after restarting the application.

Current behavior does not allow to use multiple accounts on one device. Only reinstalling the app helps to sign out completely.

Please, add/rewrite the method to logout fully.

Thanks in advance.

[wangdxnum1]

In my code,it will happen sometimes,not 100%.But this bug is indeed exist.My English is poor,I hope you can understand me.Thank you!