Don't try to save profile ID if there is none

src/frontends/android/src/org/strongswan/android/ui/VpnProfileDetailActivity.java

@@ -104,8 +104,11 @@ public class VpnProfileDetailActivity extends Activity
 	protected void onSaveInstanceState(Bundle outState)
 	{
 		super.onSaveInstanceState(outState);
+		if (mId != null)
+		{
 			outState.putLong(VpnProfileDataSource.KEY_ID, mId);
 		}
+	}
 
 	@Override
 	public boolean onCreateOptionsMenu(Menu menu)