[clang-rename] fix Emacs script build failure

Clang-rename Emacs integration script sometimes doesn't work correctly.

llvm-svn: 277469

clang-tools-extra/clang-rename/tool/clang-rename.el

@@ -34,8 +34,9 @@
           ;; Run clang-rename via bash.
           (shell-command rename-command)
           ;; Reload buffer.
-          (interactive)
-          (revert-buffer t t)
+          (lambda ()
+            (interactive)
+            (revert-buffer t t))
     )
   )
 )