Clear UI/progress bar on disconnect/quit

And ensure that server idle loop sends run command once per
idle loop entry.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/server.c b/server.c
index 490c277..299c3e1 100644
--- a/server.c
+++ b/server.c
@@ -354,6 +354,7 @@
 
 	fio_server_send_quit_cmd();
 	reset_fio_state();
+	first_cmd_check = 0;
 	return ret;
 }
 
@@ -394,6 +395,7 @@
 	ret = fio_backend();
 	fio_server_send_quit_cmd();
 	reset_fio_state();
+	first_cmd_check = 0;
 	return ret;
 }