Fix ChangeClipBounds to set final clip to null.

Bug 35227753

ChangeClipBounds wasn't setting the final clip to null after its
transition if the end clip was supposed to be null.

Test: I9089e0c84718d219cfda266a99fd3dffdbae8512

Change-Id: If928454b30807ccc6b34ed4dfbb14857d99d43be
1 file changed