wifi: b43legacy: clean up one inconsistent indenting

Eliminate the follow smatch warning:
drivers/net/wireless/broadcom/b43legacy/main.c:2947 b43legacy_wireless_core_stop() warn: inconsistent indenting
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220719075637.111716-1-yang.lee@linux.alibaba.com

drivers/net/wireless/broadcom/b43legacy/main.c

@@ -2944,7 +2944,7 @@ static void b43legacy_wireless_core_stop(struct b43legacy_wldev *dev)
 			dev_kfree_skb(skb_dequeue(&wl->tx_queue[queue_num]));
 	}
 
-b43legacy_mac_suspend(dev);
+	b43legacy_mac_suspend(dev);
 	free_irq(dev->dev->irq, dev);
 	b43legacydbg(wl, "Wireless interface stopped\n");
 }