pybricks.nxtdevices.TouchSensor: Initialize analog value.

The DCM with analog reads has not yet been implemented on NXT, and the compiler doesn't know that the unused value won't be used on raise. For now make the compiler happy by just initializing it.

Author: laurensvalk

pybricks/nxtdevices/pb_type_nxtdevices_soundsensor.c

@@ -38,7 +38,7 @@ static mp_obj_t nxtdevices_SoundSensor_intensity(size_t n_args, const mp_obj_t *
         nxtdevices_SoundSensor_obj_t, self,
         PB_ARG_DEFAULT_TRUE(audible_only));
 
-    uint32_t analog;
+    uint32_t analog = 0;
     pb_assert(pbio_port_get_analog_value(self->port, LEGO_DEVICE_TYPE_ID_NXT_SOUND_SENSOR, mp_obj_is_true(audible_only_in), &analog));
     return mp_obj_new_int(analog_scale(analog, 650, 4860, true));
 }

pybricks/nxtdevices/pb_type_nxtdevices_touchsensor.c

@@ -25,7 +25,7 @@ typedef struct _nxtdevices_TouchSensor_obj_t {
 // pybricks.nxtdevices.TouchSensor.pressed
 static mp_obj_t nxtdevices_TouchSensor_pressed(mp_obj_t self_in) {
     nxtdevices_TouchSensor_obj_t *self = MP_OBJ_TO_PTR(self_in);
-    uint32_t analog;
+    uint32_t analog = 0;
     pb_assert(pbio_port_get_analog_value(self->port, LEGO_DEVICE_TYPE_ID_NXT_TOUCH_SENSOR, false, &analog));
     return mp_obj_new_bool(analog < 3000);
 }