cannot run simple mqtt example after ESP8266_RTOS_SDK pre-release 2.0.0-rc1

[m.-ahmad]

SDK was working fine 2 days back but now after the new release I have compiled the code and start the serial monitor. And the controller seems to get stuck at MQTT connected. Kindly fix this ASAP.

`SDK version:2.0-dev(79c549f) 71664
mode : sta(2c:3a:e8:05:ec:59)
add if0
scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 5 (10)
add 0
aid 9
pm open phy_2,type:2 0 0
cnt

connected with netis, channel 6
dhcp client start...
sta connected
ip:192.168.11.205,mask:255.255.255.0,gw:192.168.11.1
sta got ip ,create task and free heap size is 69280
mqtt client thread starts
Use MQTTStartTask
MQTT Connected`