rtlwifi: rtl8192de: remove pointless conditional before kfree_skb()

Remove pointless conditional before kfree_skb().
Signed-off-by: NWei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: NLarry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rtlwifi/rtl8192de/fw.c

@@ -570,8 +570,7 @@ static bool _rtl92d_cmd_send_packet(struct ieee80211_hw *hw,
 
 	ring = &rtlpci->tx_ring[BEACON_QUEUE];
 	pskb = __skb_dequeue(&ring->queue);
-	if (pskb)
-		kfree_skb(pskb);
+	kfree_skb(pskb);
 	spin_lock_irqsave(&rtlpriv->locks.irq_th_lock, flags);
 	pdesc = &ring->desc[idx];
 	/* discard output from call below */