MEAS airspeed: Stricter initialization and constructors

src/drivers/meas_airspeed/meas_airspeed.cpp

@@ -140,9 +140,9 @@ extern "C" __EXPORT int meas_airspeed_main(int argc, char *argv[]);
 MEASAirspeed::MEASAirspeed(int bus, int address, const char *path) : Airspeed(bus, address,
 	CONVERSION_INTERVAL, path),
 	_filter(MEAS_RATE, MEAS_DRIVER_FILTER_FREQ),
-	_t_system_power(-1)
+	_t_system_power(-1),
+	system_power{}
 {
-	memset(&system_power, 0, sizeof(system_power));
 }
 
 int

src/drivers/meas_airspeed/module.mk

@@ -40,3 +40,5 @@ MODULE_COMMAND		= meas_airspeed
 SRCS			= meas_airspeed.cpp
 
 MODULE_STACKSIZE	= 1200
+
+EXTRACXXFLAGS	= -Weffc++