Simplify some code in VectorisedView#ToView.
Simplify some code in VectorisedView#ToView.

PiperOrigin-RevId: 212317717
Change-Id: Ic77449c53bf2f8be92c9f0a7a726c45bd35ec435

google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor