MS5611: Fix build error

src/drivers/ms5611/ms5611_nuttx.cpp

@@ -271,7 +271,7 @@ MS5611::init()
 	}
 
 	/* allocate basic report buffers */
-	_reports = new ringbuffer::RingBuffer(2, sizeof(baro_report));
+	_reports = new ringbuffer::RingBuffer(2, sizeof(sensor_baro_s));
 
 	if (_reports == nullptr) {
 		DEVICE_DEBUG("can't get memory for reports");