Set 'visualbell' in test 72 to avoid a beep.
diff --git a/src/testdir/test72.in b/src/testdir/test72.in
index faf5c0a..6acb6d8 100644
--- a/src/testdir/test72.in
+++ b/src/testdir/test72.in
@@ -6,7 +6,7 @@
 :so small.vim
 :"
 :" Test 'undofile': first a simple one-line change.
-:set nocompatible viminfo+=nviminfo
+:set nocompatible viminfo+=nviminfo visualbell
 :set ul=100 undofile nomore
 :e! Xtestfile
 ggdGithis is one line:set ul=100