memory leak in paho mqtt library

[bhardwajvanshika-eaton]

adding the valgrind report that indicates where the leak is:
==8169== 124,800 bytes in 1 blocks are still reachable in loss record 4,587 of 4,587
==8169== at 0x484479B: malloc (vg_replace_malloc.c:381)
==8169== by 0x5407917: ??? (in /usr/lib/libpaho-mqtt3as.so.1.3.10)
==8169== by 0x5414179: MQTTAsync_createWithOptions (in /usr/lib/libpaho-mqtt3as.so.1.3.10)
==8169== by 0x486F19C: edgex_bus_create_mqtt (in /usr/lib/libcsdk.so)
==8169== by 0x488D656: devsdk_service_start (in /usr/lib/libcsdk.so)
==8169== by 0x40ED9A: main (main.cpp:237)