Properly cancel the animation when saving the fragment state.

Bug 33827301

When saving the fragment state, animations should be canceled, not
cleared. When clear() is called, the animation is set to null and
the ViewGroup parent doesn't remove it from its disappearing
children.

Test: manual

Change-Id: Ic65d4adad26085706ddff4d06e167e5df84e981b
1 file changed