Bug#795488: kadu: FTBFS with gcc5

[Mateusz Łukasik]

Control: reopen 795488 -1
Control: severity serious

Dear Maintainer,

Bug still exists, see on buildds:

https://buildd.debian.org/status/logs.php?pkg=kadu&ver=2.1-1&suite=sid

Latest upstream version didn't fixed it.

Mateusz