Helm: Fix switch-to-buffer in helm-source-buffer-not-found

.emacs.d/lisp/patch-helm.el

@@ -18,7 +18,9 @@
                            (with-current-buffer buffer (funcall mjm))
                          (set-buffer-major-mode buffer))
                        (switch-to-buffer buffer))
-                   (switch-to-buffer (funcall ,new-fn candidate))))))))
+                   (let ((new-buffer (save-window-excursion (funcall ',new-fn candidate)
+                                                            (current-buffer))))
+                     (switch-to-buffer new-buffer))))))))
 
 (defmacro helm-deflister (name predicate new-fn &optional extra-sources)
   (let ((buffer-source-name (format "%s buffers" name)))