message: Renamed variables and added comments
diff: [options.baseOptions copyToCOptions:&(cOptions.base_options)];
  - TfLiteSupportError *createClassifierError = nil;
  - TfLiteImageClassifier *imageClassifier =
  - TfLiteImageClassifierFromOptions(&cOptions, &createClassifierError);
  + TfLiteSupportError *cCreateClassifierError = NULL;
  + TfLiteImageClassifier *cImageClassifier =
  + TfLiteImageClassifierFromOptions(&cOptions, &cCreateClassifierError);
  [options.classificationOptions
  deleteCStringArraysOfClassificationOptions:&(cOptions.classification_options)];
  - if (![TFLCommonUtils checkCError:createClassifierError toError:error]) {
  - TfLiteSupportErrorDelete(createClassifierError);
  + // Populate iOS error if TfliteSupportError is not null and afterwards delete it.
  + if (![TFLCommonUtils checkCError:cCreateClassifierError toError:error]) {
  + TfLiteSupportErrorDelete(cCreateClassifierError);
  }
  - if (!imageClassifier) {
  + // Return nil if classifier evaluates to nil. If an error was generted by the C layer, it has
  + // already been populated to an NSError and deleted before returning from the method.
  + if (!cImageClassifier) {
  return nil;
  }
  - return [[TFLImageClassifier alloc] initWithImageClassifier:imageClassifier];
  + return [[TFLImageClassifier alloc] initWithImageClassifier:cImageClassifier];
  }
  - (nullable TFLClassificationResult *)classifyWithGMLImage:(GMLImage *)image
  .width = roi.size.width,
  .height = roi.size.height};
  - TfLiteSupportError *classifyError = nil;
  + TfLiteSupportError *classifyError = NULL;
  TfLiteClassificationResult *cClassificationResult = TfLiteImageClassifierClassifyWithRoi(
  _imageClassifier, cFrameBuffer, &boundingBox, &classifyError);
  free(cFrameBuffer->buffer);
  - cFrameBuffer->buffer = nil;
  + cFrameBuffer->buffer = NULL;
  free(cFrameBuffer);
  - cFrameBuffer = nil;
  + cFrameBuffer = NULL;
  + // Populate iOS error if C Error is not null and afterwards delete it.
  if (![TFLCommonUtils checkCError:classifyError toError:error]) {
  TfLiteSupportErrorDelete(classifyError);
  }
  + // Return nil if C result evaluates to nil. If an error was generted by the C layer, it has
  + // already been populated to an NSError and deleted before returning from the method.
  if (!cClassificationResult) {
  return nil;
  }
  