http-api: Fix leak on error

Author: ralight

src/http_api.c

@@ -348,7 +348,7 @@ static int check_access(struct mosquitto__listener *listener, struct MHD_Connect
 	context.listener = listener;
 
 	context.id = (char *)"http-api";
-	context.username = MHD_basic_auth_get_username_password (connection, &context.password);
+	context.username = MHD_basic_auth_get_username_password(connection, &context.password);
 
 	/* Authentication */
 	auth_rc = mosquitto_basic_auth(&context);
@@ -362,6 +362,7 @@ static int check_access(struct mosquitto__listener *listener, struct MHD_Connect
 		char *buf = "Not authorised\n";
 		struct MHD_Response *response = MHD_create_response_from_buffer(strlen(buf), (void *)buf, MHD_RESPMEM_MUST_COPY);
 		MHD_queue_basic_auth_fail_response(connection, "Mosquitto API", response);
+		MHD_destroy_response(response);
 
 		return MOSQ_ERR_AUTH;
 	}