From 80816b8b63091c7117d17e673a0d58e019224a60 Mon Sep 17 00:00:00 2001
From: Stijn Tintel <stijn@linux-ipv6.be>
Date: Thu, 16 Nov 2023 18:02:44 +0200
Subject: [PATCH] config: allow NULL as default in config_get_char

---
 main/config.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/main/config.c b/main/config.c
index 55d0212c..baeee5e7 100644
--- a/main/config.c
+++ b/main/config.c
@@ -81,7 +81,7 @@ char *config_get_char(const char *key, const char *default_value)
     if (val != NULL && cJSON_IsString(val) && val->valuestring != NULL) {
         ret = strndup(val->valuestring, strlen(val->valuestring));
     } else {
-        ret = strndup(default_value, strlen(default_value));
+        ret = default_value == NULL ? NULL : strndup(default_value, strlen(default_value));
     }
     ESP_LOGD(TAG, "config_get_char(%s): %s", key, ret);
     return ret;