tls: conninfo null checks
tls: conninfo null checks

Author: jsing <jsing>
Date:   Mon Sep 28 15:18:08 2015 +0000

    Explicit NULL checks and style(9) tweaks.

markokr/libusual,ifduyue/libusual,markokr/libusual,ifduyue/libusual,ifduyue/libusual,markokr/libusual,markokr/libusual,ifduyue/libusual