Merge commit '935e34e' into bfgminer

miner.c

@@ -4316,7 +4316,6 @@ static void __kill_work(void)
 		
 		applog(LOG_WARNING, "Killing %"PRIpreprv, thr->cgpu->proc_repr);
 		thr_info_cancel(thr);
-		pthread_join(thr->pth, NULL);
 	}
 
 	applog(LOG_DEBUG, "Killing off stage thread");