[geeklog-hg] [Geeklog-Core/geeklog] cb0f3a: Added more error checks

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/Geeklog-Core/geeklog
  Commit: cb0f3ae01b7b31fe776339cfe886c940535b846e
      https://github.com/Geeklog-Core/geeklog/commit/cb0f3ae01b7b31fe776339cfe886c940535b846e
  Author: Kenji ITO <mystralkk at gmail.com>
  Date:   2017-11-20 (Mon, 20 Nov 2017)

  Changed paths:
    M public_html/admin/install/classes/installer.class.php
    M system/classes/Cache/FileSystem.php

  Log Message:
  -----------
  Added more error checks