From 1195dd991e593e6593c173a1fa93e2e9dd045d3d Mon Sep 17 00:00:00 2001
From: "Roger A. Light" <roger@atchoo.org>
Date: Sat, 1 Apr 2023 08:50:03 +0100
Subject: [PATCH] Clearer len calculation.

---
 plugins/dynamic-security/plugin.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugins/dynamic-security/plugin.c b/plugins/dynamic-security/plugin.c
index 980a3415..59aca8cd 100644
--- a/plugins/dynamic-security/plugin.c
+++ b/plugins/dynamic-security/plugin.c
@@ -451,8 +451,8 @@ void dynsec__config_save(void)
 	json_str_len = strlen(json_str);
 
 	/* Save to file */
-	file_path_len = strlen(config_file) + 1;
-	file_path = mosquitto_malloc(file_path_len + 4);
+	file_path_len = strlen(config_file) + strlen(".new") + 1;
+	file_path = mosquitto_malloc(file_path_len);
 	if(file_path == NULL){
 		mosquitto_free(json_str);
 		mosquitto_log_printf(MOSQ_LOG_ERR, "Error saving Dynamic security plugin config: Out of memory.\n");