Commit: runtime(racket): add missing space to b:undo_indent var (#13945)

[Christian Brabandt]

runtime(racket): add missing space to b:undo_indent var (#13945)

Commit: https://github.com/vim/vim/commit/83f627ff42a3da94db1299493b2cd1133c179850
Author: D. Ben Knoble <ben.knob...@gmail.com>
Date: Wed Jan 31 14:53:55 2024 -0500

runtime(racket): add missing space to b:undo_indent var (https://github.com/vim/vim/issues/13945)

This copies commit 2a4862a (fixup! indent: only reset some options when
has vim9, 2024-01-31) from https://github.com/benknoble/vim-racket and
fixes 26b0176a9 (runtime(racket): undo some indent options only when
vim9script is available (#13935), 2024-01-30).

Signed-off-by: D. Ben Knoble <ben.knob...@gmail.com>
Signed-off-by: Christian Brabandt <c...@256bit.org>

diff --git a/runtime/indent/racket.vim b/runtime/indent/racket.vim
index bf6eeff7d..d301cd64f 100644
--- a/runtime/indent/racket.vim
+++ b/runtime/indent/racket.vim
@@ -3,7 +3,7 @@
" Maintainer: D. Ben Knoble <ben.knob...@gmail.com>
" Previous Maintainer: Will Langstroth <wi...@langstroth.com>
" URL: https://github.com/benknoble/vim-racket
-" Last Change: 2024 Jan 30
+" Last Change: 2024 Jan 31

if exists("b:did_indent")
finish
@@ -66,4 +66,4 @@ setlocal lispwords+=if-view,case-view,cond-view,list-view,dyn-view
setlocal lispwords+=case/dep
setlocal lispwords+=define/obs

-let b:undo_indent = "setlocal lisp< ai< si< lw<" .. (has('vim9script') ? 'indentexpr< lispoptions<' : '')
+let b:undo_indent = "setlocal lisp< ai< si< lw<" .. (has('vim9script') ? ' indentexpr< lispoptions<' : '')