weston-info: do not round refresh rates

Weston-info was accidentally rounding refresh rates to integer Hz.

Fix it to print 3 decimals, as the protocol carries exactly that.

Reported-by: Michel Dänzer <michel@daenzer.net>
Cc: John Galt <johngaltfirstrun@gmail.com>
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Michel Dänzer <michel@daenzer.net>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
1 file changed