rubocop noise: introduced and resolved rails specific cop

http://rubocop.readthedocs.io/en/latest/cops/#rails

config/initializers/custom_error_wrapper.rb

@@ -2,5 +2,5 @@
 # TODO: needs better wrapping instead of nuking
 # https://rubyplus.com/articles/3401
 ActionView::Base.field_error_proc = proc do |html_tag, _instance|
-  html_tag.html_safe
+  html_tag
 end