[dovecot/core] 134e7d: imapc: Don't try to add mails to index if they alr...

[GitHub]

  Branch: refs/heads/master-2.3
  Home:   https://github.com/dovecot/core
  Commit: 134e7d2a66da9fefe53114d951c9884fbdb3d898
      https://github.com/dovecot/core/commit/134e7d2a66da9fefe53114d951c9884fbdb3d898
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2018-03-15 (Thu, 15 Mar 2018)

  Changed paths:
    M src/lib-storage/index/imapc/imapc-mailbox.c

  Log Message:
  -----------
  imapc: Don't try to add mails to index if they already exist there

Broken by 259a4ca5943123915a019799623d2e4a4ef7fd15 when imapc was used
with (not in-memory) index files.

This caused errors like "Append with UID 200, but next_uid = 201"