libempathy: Fix leak of certificate data.
libempathy: Fix leak of certificate data.

https://bugzilla.gnome.org/show_bug.cgi?id=636258#c3

GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets