[dovecot/core] e0f82a: imap-hibernate: Avoid using casts

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: e0f82a1aa965de22af825ea68548a5a5f48fa3f9
      https://github.com/dovecot/core/commit/e0f82a1aa965de22af825ea68548a5a5f48fa3f9
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2017-03-01 (Wed, 01 Mar 2017)

  Changed paths:
    M src/imap-hibernate/imap-client.c

  Log Message:
  -----------
  imap-hibernate: Avoid using casts