[dovecot/core] a81be8: lib: Fixed ostream-failure-at with blocking parent...

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: a81be83a3bb00b7b31b832f50bd8542e62a71891
      https://github.com/dovecot/core/commit/a81be83a3bb00b7b31b832f50bd8542e62a71891
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-09-21 (Wed, 21 Sep 2016)

  Changed paths:
    M src/lib/ostream-failure-at.c

  Log Message:
  -----------
  lib: Fixed ostream-failure-at with blocking parent stream.

Blocking ostream returns either a full success or a full failure. It can't
return that only n/m bytes were written.

Fixes assert:
Panic: file ostream.c: line 255 (o_stream_sendv_int): assertion failed: (!stream->blocking)