Marvin Scholz authored May 11, 2021 and David committed May 22, 2021

The previous check if data is nil is useless here, as
unarchiveObjectWithData can not modify data, and there is
already a check above this code that ensures data is not nil.
But unarchiveObjectWithData could fail if it can not decode the
archive, raising an NSInvalidArgumentException, so handle that
properly.