From 20fc0519af073374506b7a2cf4c452c1a9d62146 Mon Sep 17 00:00:00 2001
From: Jan Edmund Lazo <jan.lazo@mail.utoronto.ca>
Date: Sun, 1 Aug 2021 10:45:01 -0400
Subject: [PATCH] vim-patch:8.2.3246: memory use after free

Problem:    Memory use after free.
Solution:   When clearing a string option set the pointer to "empty_option".
https://github.com/vim/vim/commit/77111e2bfc7316eb6b1e653386cef6441af806f8
---
 src/nvim/option.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nvim/option.c b/src/nvim/option.c
index 95970a77f8..b40ecd22c8 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -770,7 +770,7 @@ void free_all_options(void)
       }
     } else if (options[i].var != VAR_WIN && (options[i].flags & P_STRING)) {
       // buffer-local option: free global value
-      free_string_option(*(char_u **)options[i].var);
+      clear_string_option((char_u **)options[i].var);
     }
   }
 }