message: HCSR04: Fixing static analysis issues
diff: @@ -46,29 +46,35 @@ hcsr04_context hcsr04_init(int triggerPin, int echoPin) {
  dev->trigPin = mraa_gpio_init(triggerPin);
  if(!dev->trigPin) {
  printf("Unable to initialize the trigger pin\n");
  + free(dev);
  return NULL;
  }
  dev->echoPin = mraa_gpio_init(echoPin);
  if(!dev->echoPin) {
  printf("Unable to initialize the echo pin\n");
  + free(dev);
  return NULL;
  }
  // Setting direction for the GPIO pins
  if(mraa_gpio_dir(dev->trigPin, MRAA_GPIO_OUT) != MRAA_SUCCESS) {
  printf("Unable to set the direction of the trigger Pin\n");
  + free(dev);
  return NULL;
  }
  if(mraa_gpio_dir(dev->echoPin, MRAA_GPIO_IN) != MRAA_SUCCESS) {
  printf("Unable to set the direction of the echo Pin\n");
  + free(dev);
  return NULL;
  }
  // Setting the trigger pin to logic level 0
  - if(mraa_gpio_write(dev->trigPin, 0) != MRAA_SUCCESS)
  + if(mraa_gpio_write(dev->trigPin, 0) != MRAA_SUCCESS) {
  + free(dev);
  return NULL;
  + }
  // initialize the interrupt counter
  dev->interruptCounter = 0;
  