icedove - security update

Multiple security issues have been found in Icedove, Debian’s version of
the Mozilla Thunderbird mail client: Multiple memory safety errors may
lead to the execution of arbitrary code or denial of service.

For the stable distribution (jessie), this problem has been fixed in
version 1:45.2.0-1~deb8u1.

For the testing distribution (stretch), this problem has been fixed
in version 1:45.2.0-2.

For the unstable distribution (sid), this problem has been fixed in
version 1:45.2.0-2.

We recommend that you upgrade your icedove packages.