From 7cc31eb778cab3968a4080f2ce03ffb7bb26041e Mon Sep 17 00:00:00 2001
From: Stefan Rueger <stefan.rueger@urclocks.com>
Date: Mon, 22 Apr 2024 15:59:26 +0100
Subject: [PATCH] Render double teardown() harmless in avr910.c

---
 src/avr910.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/avr910.c b/src/avr910.c
index 80178cfd..1cc28f18 100644
--- a/src/avr910.c
+++ b/src/avr910.c
@@ -83,6 +83,7 @@ static void avr910_setup(PROGRAMMER * pgm) {
 
 static void avr910_teardown(PROGRAMMER * pgm) {
   mmt_free(pgm->cookie);
+  pgm->cookie = NULL;
 }