[Bluetooth] Kill redundant NULL checks before kfree()

There's no need to check for NULL before calling kfree() on a pointer.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/hci_usb.c b/drivers/bluetooth/hci_usb.c
index e8bad41..319871ca 100644
--- a/drivers/bluetooth/hci_usb.c
+++ b/drivers/bluetooth/hci_usb.c
@@ -390,10 +390,8 @@
 			urb = &_urb->urb;
 			BT_DBG("%s freeing _urb %p type %d urb %p",
 					husb->hdev->name, _urb, _urb->type, urb);
-			if (urb->setup_packet)
-				kfree(urb->setup_packet);
-			if (urb->transfer_buffer)
-				kfree(urb->transfer_buffer);
+			kfree(urb->setup_packet);
+			kfree(urb->transfer_buffer);
 			_urb_free(_urb);
 		}