Improve the formatting of some code

Author: bbatsov

cider-popup.el

@@ -99,7 +99,9 @@ and automatically removed when killed."
     (when ancillary
       (add-to-list 'cider-ancillary-buffers name)
       (add-hook 'kill-buffer-hook
-                (lambda () (setq cider-ancillary-buffers (remove name cider-ancillary-buffers)))
+                (lambda ()
+                  (setq cider-ancillary-buffers
+                        (remove name cider-ancillary-buffers)))
                 nil 'local))
     (current-buffer)))