null check client pointer before deref #156
Description
if (client == NULL) return; // aborted connection
Line 528 in 37cab7c
as done in https://github.com/arduino-org/Esp-Link/blob/master/mqtt/mqtt.c
{{ message }}
if (client == NULL) return; // aborted connection
Line 528 in 37cab7c
as done in https://github.com/arduino-org/Esp-Link/blob/master/mqtt/mqtt.c