CVE-2015-3455 update

[Amos Jeffries <squid3@treenet.co.nz>]

Hi,
 The tracker page
<https://security-tracker.debian.org/tracker/CVE-2015-3455> seems to
need a bit of an update.

The squid and squid3 packages in Debian Stretch and Sid are now at
3.5.10 version which is not vulnerable.

Amos Jeffries
(Squid upstream)