libtasn1: fix CVE-2014-3468

Jira: SB-3025
Integrate community fix for the issue CVE-2014-3468

Signed-off-by: Priyanka Shobhan <priyanka_shobhan@mentor.com>
Merge pull request #224 from pshobhan/pshobhan/bugfix/CVE-2014-3468

libtasn1 fix CVE-2014 3468