staging: vt6656: revert : 64 bit- Correctly address void structure.

The patch is wrong and is partially reverted.

The NULL check of pTransmitKey->pvKeyTable is kept.

The problem was ultimately fixed by upstream commit.
1ee4c55fc9620451b2a825d793042a7e0775391b
staging: vt6656: Fix inconsistent structure packing

Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: stable@vger.kernel.org # 3.8
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/rxtx.c

@@ -1232,7 +1232,7 @@ static int s_bPacketToWirelessUsb(struct vnt_private *pDevice, u8 byPktType,
 	pvRrvTime = pMICHDR = pvRTS = pvCTS = pvTxDataHd = NULL;
 
 	if (bNeedEncryption && pTransmitKey->pvKeyTable) {
-		if (((PSKeyTable)&pTransmitKey->pvKeyTable)->bSoftWEP == TRUE)
+		if (((PSKeyTable)pTransmitKey->pvKeyTable)->bSoftWEP == TRUE)
 			bSoftWEP = TRUE; /* WEP 256 */
 	}