[channel,urbdrc] fix type of usb hotplug callback
The libusb_hotplug_callback_fn uses LIBUSB_CALL call type
@@ -578,7 +578,7 @@ static BOOL device_is_filtered(struct libusb_device* dev,
return filtered;
}
-static int hotplug_callback(struct libusb_context* ctx, struct libusb_device* dev,
+static int LIBUSB_CALL hotplug_callback(struct libusb_context* ctx, struct libusb_device* dev,
libusb_hotplug_event event, void* user_data)
{
VID_PID_PAIR pair;
