net: remove useless memset's in drivers get_stats64

In dev_get_stats() the statistic structure storage has already been
zeroed. Therefore network drivers do not need to call memset() again.
Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/apm/xgene/xgene_enet_main.c

@@ -1462,7 +1462,6 @@ static void xgene_enet_get_stats64(
 	struct xgene_enet_desc_ring *ring;
 	int i;
 
-	memset(stats, 0, sizeof(struct rtnl_link_stats64));
 	for (i = 0; i < pdata->txq_cnt; i++) {
 		ring = pdata->tx_ring[i];
 		if (ring) {

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -5885,8 +5885,6 @@ bnxt_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
 	u32 i;
 	struct bnxt *bp = netdev_priv(dev);
 
-	memset(stats, 0, sizeof(struct rtnl_link_stats64));
-
 	if (!bp->bnapi)
 		return;
 

drivers/net/ethernet/intel/e1000e/netdev.c

@@ -5925,7 +5925,6 @@ void e1000e_get_stats64(struct net_device *netdev,
 {
 	struct e1000_adapter *adapter = netdev_priv(netdev);
 
-	memset(stats, 0, sizeof(struct rtnl_link_stats64));
 	spin_lock(&adapter->stats64_lock);
 	e1000e_update_stats(adapter);
 	/* Fill out the OS statistics structure */