reader_lifecycle_policy: close inactive_read
reader_lifecycle_policy: close inactive_read

Make sure to close the unregistered inactive_read
before it's destroyed, if the unregistered reader_opt
is engaged.

Signed-off-by: Benny Halevy <23c997c90eb8537635e9392d48e7af1bf1b2ca22@scylladb.com>

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla