Fix condition for with-silent-modification

* org-macs.el (with-silent-modifications): Fix condition for
with-silent-modification.

lisp/org-macs.el

@@ -49,7 +49,7 @@
 	 (with-no-warnings (called-interactively-p ,kind)) ;; defined with no argument in <=23.1
        (interactive-p))))
 
-(if (or (<= emacs-major-version 23)
+(if (or (< emacs-major-version 23)
 	(and (<= emacs-major-version 23)
 	     (< emacs-minor-version 2)))
     (defmacro with-silent-modifications