Increase the refcount on None before returning it.
Increase the refcount on None before returning it.

This is important as when that variable falls out of scope, you're going
to decrease the refcount on None. Eventually you'll hit a zero refcount
and None will be deallocated, which shouldn't ever happen.

elasticsales/ciso8601,closeio/ciso8601,closeio/ciso8601,elasticsales/ciso8601,closeio/ciso8601