Fix crash in ssl retransmission thread

Fix crash in ssl retransmission thread

It is possible to happen segmentation fault if retransmission thread
lock a mutex during CAdeinitSslAdapter function is called

Patch 1: Initial upload

Change-Id: I446aeb2cc9d6cd07d2683984ba2783ab72020c58
Signed-off-by: Joonghwan Lee <jh05.lee@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/16575
Tested-by: jenkins-iotivity <jenkins@iotivity.org>
Reviewed-by: Randeep Singh <randeep.s@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/17107