emacs-quick-startup unbound on the initialization of blink-cursor-mode

[YAMAMOTO Mitsuharu]

The initial value of blink-cursor-mode is set using the value of
emacs-quick-startup when noninteractive is nil.

  :init-value (not (or noninteractive
                       emacs-quick-startup
                       (eq system-type 'ms-dos)
                       (not (memq window-system '(x w32)))))

It works on the platforms that can invoke the noninteractive version
to dump an Emacs executable.  However, the Mac OS 9 version does not
have this feature and fails to startup with

  Symbol's value as variable is void: emacs-quick-startup

while evaluating (load "frame") in loadup.el.  We have (defvar
emacs-quick-startup nil) in startup.el, but it is loaded after
frame.el.

                                     YAMAMOTO Mitsuharu
                                address@hidden