rxjava leak 2

package com.lacronicus.rxjavaleaktest.app;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import rx.Observable;
import rx.Subscription;
import rx.android.schedulers.AndroidSchedulers;
import rx.functions.Action0;
import rx.functions.Action1;
import rx.functions.Func1;
import rx.schedulers.Schedulers;


public class MainActivity extends Activity {
    Subscription s;

    //this represents a long-running background action. shouldn't have a reference to the activity
    private static class myMapFunction implements Func1<Integer, Integer> {
        @Override
        public Integer call(Integer integer) {
            int x = 1;
            while (x == 1) {
                try {
                    Thread.sleep(10000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
            return 1;
        }
    }


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        s = Observable.from(1).observeOn(Schedulers.io()).map(new myMapFunction()).observeOn(AndroidSchedulers.mainThread()).subscribe(
                new Action1<Integer>() {
                    @Override
                    public void call(Integer integer) {
                        Toast.makeText(MainActivity.this, "lol", Toast.LENGTH_SHORT).show();
                    }
                }, new Action1<Throwable>() {
                    @Override
                    public void call(Throwable throwable) {
                        Toast.makeText(MainActivity.this, "lol", Toast.LENGTH_SHORT).show();
                    }
                }, new Action0() {
                    @Override
                    public void call() {
                        Toast.makeText(MainActivity.this, "lol", Toast.LENGTH_SHORT).show();
                    }
                }
        );
    }

    @Override
    protected void onStop() {
        super.onStop();
        if (s != null)
            s.unsubscribe();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

}