[dovecot/core] c13ec2: pop3: Expand settings to fix rawlog_dir

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: c13ec2148cc43cb36f61e781f2514705f563cf47
      https://github.com/dovecot/core/commit/c13ec2148cc43cb36f61e781f2514705f563cf47
  Author: Timo Sirainen <timo.sirainen at dovecot.fi>
  Date:   2017-10-06 (Fri, 06 Oct 2017)

  Changed paths:
    M src/pop3/main.c

  Log Message:
  -----------
  pop3: Expand settings to fix rawlog_dir

Even if %variables weren't used in rawlog_dir, the path was always prefixed
with "0".