Start longpoll from every pool when load balance strategy is in use.

cgminer.c

@@ -4075,7 +4075,7 @@ static struct pool *select_longpoll_pool(struct pool *cp)
  */
 static void wait_lpcurrent(struct pool *pool)
 {
-	if (pool->enabled == POOL_REJECTING)
+	if (pool->enabled == POOL_REJECTING || pool_strategy == POOL_LOADBALANCE)
 		return;
 
 	while (pool != current_pool()) {