More runtime file fixes for 'compatible' mode.
diff --git a/runtime/lang/menu_vi_vn.vim b/runtime/lang/menu_vi_vn.vim
index 4b2b21f..9fbd2c6 100644
--- a/runtime/lang/menu_vi_vn.vim
+++ b/runtime/lang/menu_vi_vn.vim
@@ -14,6 +14,8 @@
    finish
 endif
 let did_menu_trans = 1
+let s:keepcpo= &cpo
+set cpo&vim
 
 scriptencoding utf-8
 
@@ -327,3 +329,6 @@
 let g:menutrans_fileformat_choices = "&Unix\n&Dos\n&Mac\n&Hủy bỏ"
 "
 let menutrans_no_file = "[không có tập tin]"
+
+let &cpo = s:keepcpo
+unlet s:keepcpo