org-crypt: Decrypt entries with a properties drawer

* lisp/org-crypt.el (org-decrypt-entry): Decrypt entries with
  a properties drawer.

This commit propagates changes made to `org-encrypt-entry' in the
previous commit.

lisp/org-crypt.el

@@ -199,14 +199,14 @@ See `org-crypt-disable-auto-save'."
   (interactive)
   (require 'epg)
   (unless (org-before-first-heading-p)
-    (save-excursion
+    (org-with-wide-buffer
      (org-back-to-heading t)
      (let ((heading-point (point))
 	   (heading-was-invisible-p
 	    (save-excursion
 	      (outline-end-of-heading)
 	      (outline-invisible-p))))
-	(forward-line)
+       (org-end-of-meta-data)
        (when (looking-at "-----BEGIN PGP MESSAGE-----")
 	 (org-crypt-check-auto-save)
 	 (set (make-local-variable 'epg-context) (epg-make-context nil t t))