bankd_pcsc: Don't log every successful SCardTransmit

Contrary to other operations, SCardTransmit has a much higher frequency
and the logs should not be clobbered with "OK" lines all over the place.

Change-Id: Icf87b61d71722b2998ae78f9aee7c4ad94c46da7

src/bankd/bankd_pcsc.c

@@ -297,9 +297,10 @@ static int pcsc_transceive(struct bankd_worker *worker, const uint8_t *out, size
 	long rc;
 
 	rc = SCardTransmit(worker->reader.pcsc.hCard, pioSendPci, out, out_len, &pioRecvPci, in, in_len);
-	PCSC_ERROR(worker, rc, "SCardTransmit");
+	/* don't use PCSC_ERROR here as we don't want to log every successful SCardTransmit */
+	if (rc != SCARD_S_SUCCESS)
+		LOGW_PCSC_ERROR(worker, rc, "SCardTransmit");
 
-end:
 	return rc;
 }