User Notes and Warnings in Viewtopic: update from version 1.0.2.a to 1.0.3

[https://www.phpbb.com/customise/db/mod/user_noteswarnings_in_viewtopic]

* Replaces "User Notes and Warnings in Viewtopic: fix crash on post-404"
  (b5095199b50aacef4929796f3289b142d308191d)