[O] Commenting in org-mode 9.2.1

[Abdo Haji-Ali]

I just updated to the latest org-mode (9.2.1) and noticed that when I press
M-; (or call `org-comment-dwim`) inside a `#+BEGIN_SRC emacs-lisp` section,
I get the following error message
`org-comment-dwim: Wrong number of arguments: (0 . 2), 3`

Calling the function outside a source section works fine though.