[dovecot/core] cae3c6: driver-cassandra: Free statement pool on update

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: cae3c6903c10682429f9849ab1a25093e3f538e4
      https://github.com/dovecot/core/commit/cae3c6903c10682429f9849ab1a25093e3f538e4
  Author: Aki Tuomi <aki.tuomi at dovecot.fi>
  Date:   2017-12-07 (Thu, 07 Dec 2017)

  Changed paths:
    M src/lib-sql/driver-cassandra.c

  Log Message:
  -----------
  driver-cassandra: Free statement pool on update

Otherwise the pool memory will leak. This was happening with non-prepared
statements when version was older than 4.