[geeklog-hg] [Geeklog-Core/geeklog] 609b59: Fixed PHP warning

[Tom]

  Branch: refs/heads/master
  Home:   https://github.com/Geeklog-Core/geeklog
  Commit: 609b5976484d7e058dd5e2f8437ecb0390217c66
      https://github.com/Geeklog-Core/geeklog/commit/609b5976484d7e058dd5e2f8437ecb0390217c66
  Author: eSilverStrike <eSilverStrike at users.noreply.github.com>
  Date:   2022-05-16 (Mon, 16 May 2022)

  Changed paths:
    M system/classes/article.class.php

  Log Message:
  -----------
  Fixed PHP warning