confused about android example code

confused about android example code

I'm looking over some code on the android developer's site and have a
quick question about the example show here -
http://developer.android.com/guide/components/fragments.html
In particular, I'm looking at this piece of code -
public static class DetailsActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getResources().getConfiguration().orientation
== Configuration.ORIENTATION_LANDSCAPE) {
// If the screen is now in landscape mode, we can show the
// dialog in-line with the list so we don't need this activity.
finish();
return;
}
if (savedInstanceState == null) {
// During initial setup, plug in the details fragment.
DetailsFragment details = new DetailsFragment();
details.setArguments(getIntent().getExtras());
getFragmentManager().beginTransaction().add(android.R.id.content,
details).commit();
}
}
What is the point of the second if statement -
if (savedInstanceState == null) {
I can't find any situation where this if statement wouldn't be true. I've
tested this code by adding an else statement and setting a breakpoint in
it. I could not get to that breakpoint no matter I tried. So why even
bother with an if statement? Why not leave it out all together?