From 503e6f7832dd07b077b3ae654fd7ae46e905aaf3 Mon Sep 17 00:00:00 2001
From: f380cedric <f380cedric@users.noreply.github.com>
Date: Tue, 18 Jan 2022 10:00:30 +0100
Subject: [PATCH] vim-patch:8.2.3403: memory leak for :retab with invalid
 argument

Problem:    Memory leak for :retab with invalid argument.
Solution:   Free the memory.  Make error messages consistent.
https://github.com/vim/vim/commit/2ddb89f8a94425cda1e5491efc80c1ccccb6e08e

Changes in ex_retab are N/A (behind a non-FEAT_) and have been dropped.
---
 src/nvim/option.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/nvim/option.c b/src/nvim/option.c
index 9471974d2b..bd76dbda95 100644
--- a/src/nvim/option.c
+++ b/src/nvim/option.c
@@ -7513,8 +7513,10 @@ bool tabstop_set(char_u *var, long **array)
   for (cp = var; *cp != NUL;) {
     int n = atoi((char *)cp);
 
+    // Catch negative values, overflow and ridiculous big values.
     if (n < 0 || n > 9999) {
       semsg(_(e_invarg2), cp);
+      XFREE_CLEAR(*array);
       return false;
     }
     (*array)[t++] = n;