defsubst (e.g) pl-str -> defun pl-re : &rest-args are not passed

[salamynder]

Only this works (Emacs 25.1.1 MingWin):

(defsubst pl-str (str &rest args)
  (pl-re (regexp-quote str) (car args)))

i.e. passing the car of args in the pl-re_call. Was there a change to the semantics of defsubst, that it worked before?