Quiet now unused variable warning in hfa detect.
diff --git a/driver-hashfast.c b/driver-hashfast.c
index 9120fc2..c58adf1 100644
--- a/driver-hashfast.c
+++ b/driver-hashfast.c
@@ -491,7 +491,7 @@ static struct cgpu_info *hfa_detect_one(libusb_device *dev, struct usb_find_devi
return hashfast;
}
-static void hfa_detect(bool hotplug)
+static void hfa_detect(bool __maybe_unused hotplug)
{
/* Set up the CRC tables only once. */
if (!hfa_crc8_set)