Fix memleak in log_store_empathy_get_chats_for_dir. Only build filename if its needed and freed again.
Fix memleak in log_store_empathy_get_chats_for_dir. Only build filename if its
needed and freed again.

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