Bug#886907: libgadu: ftbfs due to -Werror and gnutls_compression_get_name deprecated

[YunQiang Su]

Package: libgadu
Version: 1:1.12.2-2
Severity: serious

With recent rebuild libgadu, it failed to build, as it use -Werror,
and gnutls_compression_get_name, while this function is marked as
deprecated now.

-- 
YunQiang Su