[dovecot/core] df3ba6: lib-storage: simplify mailbox_get_path_to()

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/dovecot/core
  Commit: df3ba6386b1b22416f8962b19b9d2e84bad5f97a
      https://github.com/dovecot/core/commit/df3ba6386b1b22416f8962b19b9d2e84bad5f97a
  Author: Josef 'Jeff' Sipek <jeff.sipek at dovecot.fi>
  Date:   2017-06-08 (Thu, 08 Jun 2017)

  Changed paths:
    M src/lib-storage/mail-storage.c

  Log Message:
  -----------
  lib-storage: simplify mailbox_get_path_to()

Instead of special casing MAILBOX_LIST_PATH_TYPE_{MAILBOX,INDEX}, we can use
a common helper to remove code duplication.