Issei Aoki

``` java.lang.NullPointerException: Attempt to read from field 'float android.graphics.RectF.left' on a null object reference at com.isseiaoki.simplecropview.CropImageView.getActualCropRect(CropImageView.java:1921) at com.example.simplecropviewsample.RxFragment.onSaveInstanceState(RxFragment.java:98) at android.support.v4.app.Fragment.performSaveInstanceState(Fragment.java:2356) at android.support.v4.app.FragmentManagerImpl.saveFragmentBasicState(FragmentManager.java:2607) at android.support.v4.app.FragmentManagerImpl.saveAllState(FragmentManager.java:2678) at android.support.v4.app.FragmentController.saveAllState(FragmentController.java:134) at android.support.v4.app.FragmentActivity.onSaveInstanceState(FragmentActivity.java:571) at android.support.v7.app.AppCompatActivity.onSaveInstanceState(AppCompatActivity.java:509)...