This prevents the solver interfering with the metrics screen.
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
(as of tromp/equihash commit 690fc5eff453bc0c1ec66b283395c9df87701e93). Author: John Tromp <john.tromp@gmail.com> Signed-off-by: Daira Hopwood <daira@jacaranda.org>