IFDHPowerICC: do not log an error for IFD_NO_SUCH_DEVICE

When a reader is removed pcscd will try to cleanly close the driver and
will try to power down the card (if needed).

WriteUSB() will correctly return STATUS_NO_SUCH_DEVICE. CmdPowerOff()
will also return STATUS_NO_SUCH_DEVICE.
But IFDHPowerICC() did not correctly handled this returned value.

src/ifdhandler.c

@@ -1216,6 +1216,9 @@ EXTERNAL RESPONSECODE IFDHPowerICC(DWORD Lun, DWORD Action,
 			CcidSlots[reader_index].bPowerFlags |= MASK_POWERFLAGS_PDWN;
 
 			/* send the command */
+			return_value = CmdPowerOff(reader_index);
+			if (IFD_NO_SUCH_DEVICE == return_value)
+				goto end;
 			if (IFD_SUCCESS != CmdPowerOff(reader_index))
 			{
 				DEBUG_CRITICAL("PowerDown failed");