libgadu - security update

It was discovered that malformed responses from a Gadu-Gadu file relay
server could lead to denial of service or the execution of arbitrary
code in applications linked to the libgadu library.

The oldstable distribution (squeeze) is not affected.

For the stable distribution (wheezy), this problem has been fixed in
version 1.11.2-1+deb7u2.

For the unstable distribution (sid), this problem has been fixed in
version 1:1.12.0~rc3-1.

We recommend that you upgrade your libgadu packages.