2.2.21: doveadm expunge is broken

[Timo Sirainen]

> On 13 Dec 2015, at 19:56, Alexander Moisseev <moiseev at mezonplus.ru> wrote:
> 
> # doveadm expunge -u user at example.com MAILBOX Trash ALL
> Fatal: expunge: To avoid accidents, each branch in search query must contain something else besides MAILBOX (e.g. just add "all" if you want everything)

Fixed: https://github.com/dovecot/core/commit/6971937a6f3e93844dbd43bdbe903628e21a9422

Also as workaround you can use 1:* instead of ALL.