[PATCH 4/6] txn: unify txn_stmt tuples reference counting rules

[Konstantin Osipov]

* Vladimir Davydov <vdavydov.dev at gmail.com> [18/07/20 20:45]:

Back in the times of 1.4 it was considered a significant
optimization...

It's a bit difficult to check some minor changes of this patch in
the diff.

OK to push.

-- 
Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
http://tarantool.io - www.twitter.com/kostja_osipov