checkout null for View.restoreHierarchyState

Root of stack trace is http://grepcode.com/file/repository.grepcode.com/java/ext/com.google.android/android/2.3.3_r1/android/view/View.java#View.dispatchRestoreInstanceState%28android.util.SparseArray%29

Then we need to check null for `SparseArray<Parcelable> container` before passing it into `View.restoreHierarchyState`.