[O] Error because org-refile calls org-back-to-heading

[Matt Lundin]

I use the following function to jump quickly to first level headings
in my org mode files:

--8<---------------cut here---------------start------------->8---
(defun my-org-global-goto ()
  (interactive)
  (let ((org-completion-use-ido t)
        (org-outline-path-complete-in-steps nil)
        (org-refile-use-outline-path nil)
        (org-refile-targets '((my-org-refile-targets :maxlevel . 1))))
    (org-refile t)
    (org-reveal '(64))))
--8<---------------cut here---------------end--------------->8---

Since the commit c25165c25dc9fdb5b57b3c66b2e0ec0efdbeb7ad on August 18,
I can only call this function when I am beneath the first level heading
of an org-mode file. Otherwise I receive the following error:

--8<---------------cut here---------------start------------->8---
Debugger entered--Lisp error: (error "Before first headline at position 1 in 
buffer *Annotate org.el (rev master)*")
  signal(error ("Before first headline at position 1 in buffer *Annotate org.el 
(rev master)*"))
  error("Before first headline at position %d in buffer %s" 1 #<buffer 
*Annotate org.el (rev master)*>)
  byte-code("\300\301`p#\207" [error "Before first headline at position %d in 
buffer %s"] 4)
  org-back-to-heading(t)
  org-refile(t)
  my-org-global-goto()
  call-interactively(my-org-global-goto nil nil)
--8<---------------cut here---------------end--------------->8---

This seems a unnecessary restriction/error when calling org-refile with
the GOTO argument, since there is no need to be on a current headline
when jumping to another headline.

Thanks,
Matt