Without this we leak an fd on each domain shutdown and eventually run

out of file descriptors meaning new the console of new domains are not
logged.

Seems to have been accidentally removed in 16638:28921e83000b.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>

tools/console/daemon/io.c

@@ -747,6 +747,11 @@ static void cleanup_domain(struct domain *d)
 {
 	domain_close_tty(d);
 
+	if (d->log_fd != -1) {
+		close(d->log_fd);
+		d->log_fd = -1;
+	}
+
 	free(d->buffer.data);
 	d->buffer.data = NULL;