save-place-alist-to-file: Use prin1, not pp (bug#80183)

* lisp/saveplace.el (save-place-alist-to-file): Use 'prin1', not
'pp' (bug#80183).  Suggested by Daniel Mendler
<mail@daniel-mendler.de>.

lisp/saveplace.el

@@ -391,7 +391,7 @@ may have changed) back to `save-place-alist'."
                       coding-system-for-write))
       (let ((print-length nil)
             (print-level nil))
-        (pp save-place-alist (current-buffer)))
+        (prin1 save-place-alist (current-buffer)))
       (let ((version-control
              (cond
               ((null save-place-version-control) nil)