staging: rtl8723au: usb_ops_linux.c: Add blank line between declaration and usage

This fixes a minor sparse warning.
Reported-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NJes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8723au/hal/usb_ops_linux.c

@@ -28,7 +28,6 @@ static int usbctrl_vendorreq(struct rtw_adapter *padapter, u8 request,
 {
 	struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
 	struct usb_device *udev = pdvobjpriv->pusbdev;
-
 	unsigned int pipe;
 	int status = 0;
 	u8 reqtype;
@@ -97,6 +96,7 @@ static int usbctrl_vendorreq(struct rtw_adapter *padapter, u8 request,
 					padapter->bSurpriseRemoved = true;
 				else {
 					struct hal_data_8723a *pHalData;
+
 					pHalData = GET_HAL_DATA(padapter);
 					pHalData->srestpriv.Wifi_Error_Status =
 						USB_VEN_REQ_CMD_FAIL;