Do not tokenize a comment before continuation as ';'

* lisp/progmodes/ruby-mode.el (ruby-smie--implicit-semi-p):
Account for a comment right after point.

lisp/progmodes/ruby-mode.el

@@ -443,7 +443,7 @@ It is used when `ruby-encoding-magic-comment-style' is set to `custom'."
                   (member (save-excursion (ruby-smie--backward-token))
                           '("iuwu-mod" "and" "or")))
              (save-excursion
-               (forward-comment 1)
+               (forward-comment (point-max))
                (looking-at "&?\\."))))))
 
 (defun ruby-smie--redundant-do-p (&optional skip)

test/indent/ruby.rb

@@ -222,7 +222,7 @@ def begin
   bar
 
 # https://github.com/rails/rails/blob/17f5d8e062909f1fcae25351834d8e89967b645e/activesupport/lib/active_support/time_with_zone.rb#L206
-foo
+foo # comment intended to confuse the tokenizer
   .bar
 
 z = {