[dovecot/core] ec50ef: lib: Assert if i_stream_create_seekable_path(temp_...

[GitHub]

  Branch: refs/heads/master-2.2
  Home:   https://github.com/dovecot/core
  Commit: ec50efeec1c16fc3fcb64373caa3e69da2209d8a
      https://github.com/dovecot/core/commit/ec50efeec1c16fc3fcb64373caa3e69da2209d8a
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2016-09-19 (Mon, 19 Sep 2016)

  Changed paths:
    M src/lib/istream-seekable.c

  Log Message:
  -----------
  lib: Assert if i_stream_create_seekable_path(temp_path_prefix==NULL)

If the stream becomes large enough it would crash then in a callback
function, which makes debugging more difficult.