From df2f135c096de2906462c58daddd34f44d0699a7 Mon Sep 17 00:00:00 2001
From: Andy Green <andy@warmcat.com>
Date: Fri, 14 Aug 2020 07:18:48 +0100
Subject: [PATCH] coverity: 324692: mqtt: check for OOM in generate_id

---
 lib/roles/mqtt/client/client-mqtt.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/roles/mqtt/client/client-mqtt.c b/lib/roles/mqtt/client/client-mqtt.c
index a871bfefc..f6c2a374a 100644
--- a/lib/roles/mqtt/client/client-mqtt.c
+++ b/lib/roles/mqtt/client/client-mqtt.c
@@ -81,7 +81,11 @@ lws_mqtt_generate_id(struct lws* wsi, lws_mqtt_str_t **ms, const char *client_id
 		buf[len] = '\0';
 	}
 
-	lws_mqtt_str_advance(*ms, (uint16_t)len);
+	if (lws_mqtt_str_advance(*ms, (uint16_t)len)) {
+		lws_mqtt_str_free(ms);
+
+		return 1;
+	}
 
 	return 0;
 }