Program end in an endless loop in waitfor(Client* c, int packet_type, Timer* timer)

[raigonignatius]

When testing linkit with AWS IOT , noticed that of the MQTT connection is disconnected while attempting reconnect, it is ending in an endless loop...

Debug trace
delay(2000 mSec)
LTask.remoteCall(&nativeLoop, NULL);
MQTT Disconnect

aws_iot_mqtt_yield(3000) returned -7
-->restarting connection
reconnect MQTT...(LTask.remoteCall(&mqtt_start, NULL); )
tls starting
tls connected
wait for connect 4000
wait ends 2
connected 0
Mqtt connection... OK
subscribe_MQTT
MQTTSubscribe with timeout 4000ms
if (waitfor(c, SUBACK, &timer) == SUBACK)
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