Busybox vi provides the 'ZZ' command to save and close
the similar 'ZQ' command just exits without saving.
function old new delta
do_cmd 4222 4244 +22
Signed-off-by: Grob Grobmann <grobgrobmann@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>