fix commit send count

plugin/consensus/para/paracommitmsg.go

@@ -438,7 +438,7 @@ func (client *commitMsgClient) getNodeStatus(start, end int64) ([]*pt.ParacrossN
 	//2,如果20个块都是 commit tx的空块，20个块打包一次发送，尽量减少commit tx造成的空块
 	//3,如果形如xxoxx的块排列，x代表commit空块，o代表实际的块，即只要不全部是commit块，也要全部打包一起发出去
 	//如果=0 意味着全部是paracross commit tx，延迟发送
-	if needSentTxs == 0 && count < types.TxGroupMaxCount {
+	if needSentTxs == 0 && len(ret) < types.TxGroupMaxCount {
 		plog.Debug("para commitmsg getNodeStatus all self consensus commit tx,send delay", "start", start, "end", end)
 		return nil, nil
 	}