main/wireshark: security upgrade to 1.6.15 (CVE-2013-3555,CVE-2013-3556,CVE-2013-3557,CVE-2013-3558,CVE-2013-3559,CVE-2013-3560,CVE-2013-3561,CVE-2013-3562) fixes #1923
mentioned in issue #1923 (closed)