Bug: links to filename containing word "loops" fail to export

[Jarmo Hurri <jarmo.hurri@iki.fi>]

* Links to files containing the word ~loops~ are not exported
** What is the problem?
   It seems that if a link to a file contains the word ~loops~,
   it is not exported at all.
** How to replicate
   1. Save this org into file =org-loops-in-link.org=
   2. Save the following elisp into =minimal-org.el=, replacing the
     location of org mode with your path:
     #+begin_src elisp
       (add-to-list 'load-path (expand-file-name "~/src/org-mode/lisp"))
       (add-to-list 'load-path (expand-file-name "~/src/org-mode/contrib/lisp" t))
     #+end_src
   3. Open this file with
      #+begin_src sh
        emacs -Q -l minimal-org.el org-loops-in-link.org
      #+end_src
   4. Export to latex as a PDF file and open (C-c C-e l o), observing
      missing items when the list below is exported:
      - [[file:loopy.org]]
      - [[file:loops.org]]
      - [[file:loopz.org]]
      - [[file:some-loops.org]]
      - [[file:some-loopz.org]]
** My org and emacs versions
   - Org mode version 9.3.7 (release_9.3.7-708-g5417e3)
   - GNU Emacs 26.3