org-lparse.el: Correctly handle footnote refs in a list item

* org-lparse.el (org-lparse-end-footnote-definition): Cleanup
newlines in a transcoded footnote definition.  This ensures
that the line that is currently being processed by
`org-do-lparse' loop doesn't get broken up into multiple
lines.  Fix for the following bug -

lisp/org-lparse.el

@@ -1813,6 +1813,12 @@ Stripping happens only when the exported backend is not one of
   (org-lparse-end 'FOOTNOTE-DEFINITION n)
   (setq org-lparse-insert-tag-with-newlines 'both)
   (let ((footnote-def (org-lparse-end-collect)))
+    ;; Cleanup newlines in footnote definition.  This ensures that a
+    ;; transcoded line is never (wrongly) broken in to multiple lines.
+    (let ((pos 0))
+      (while (string-match "[\r\n]+" footnote-def pos)
+	(setq pos (1+ (match-beginning 0)))
+	(setq footnote-def (replace-match " " t t footnote-def))))
     (push (cons n footnote-def) org-lparse-footnote-definitions)))
 
 (defvar org-lparse-collect-buffer nil