bitfury: Set poll interval to start iteration before responses are processed

driver-bitfury.c

@@ -629,7 +629,7 @@ out:
 			copy_time(tvp_stat, &tv_now);
 	}
 	
-	timer_set_delay_from_now(&master_thr->tv_poll, 10000);
+	timer_set_delay(&master_thr->tv_poll, &tv_now, 10000);
 }
 
 int64_t bitfury_job_process_results(struct thr_info *thr, struct work *work, bool stopping)