fix bugs in gyro implematation

lib/Sensors/sensorData.cpp

@@ -70,6 +70,7 @@ void SensorData::enableCalcCompass() {
 }
 
 void SensorData::enableGyroskop() {
+    this->gyroskop = new MPU6050();
     this->gyroskop->initialize();
     if (!this->gyroskop->testConnection()) {
         std::cout << "SensorData::enableGyroskop: Gyroskop is not conntected. Freeze!" << std::endl;