use write_str() functions where appropriate

function                                             old     new   delta
chat_main                                           1300    1295      -5
finalize_tty_attrs                                    80      70     -10
getty_main                                          1538    1519     -19
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-34)             Total: -34 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2 files changed