runtime(just): fix typo in syntax file

closes: #16515

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/just.vim b/runtime/syntax/just.vim
index 77423a3..79c81d0 100644
--- a/runtime/syntax/just.vim
+++ b/runtime/syntax/just.vim
@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	Justfile
 " Maintainer:	Peter Benjamin <@pbnj>
-" Last Change:	2025 Jan 19
+" Last Change:	2025 Jan 25
 " Credits:	The original author, Noah Bogart <https://github.com/NoahTheDuke/vim-just/>
 
 if exists('b:current_syntax')
@@ -402,5 +402,5 @@
 hi def link justVariadicPrefix                   Statement
 hi def link justVariadicPrefixError              Error
 
-let &cpo = s:cpo_sav
-unlet s:cpo_sav
+let &cpo = s:cpo_save
+unlet s:cpo_save