message: Code style correction
diff: @@ -583,8 +583,9 @@ class NonMaxSuppressionV2Op : public OpKernel {
  int num_boxes = 0;
  ParseAndCheckBoxSizes(context, boxes, &num_boxes);
  CheckScoreSizes(context, num_boxes, scores);
  - // check if the boxes have logical coordinates
  - OP_REQUIRES(context, CheckBoxesCoordinates<T>(boxes, num_boxes), errors::InvalidArgument("boxes coordinates shouldn't have x1=x2 or y1=y2"));
  + OP_REQUIRES(
  + context, CheckBoxesCoordinates<T>(boxes, num_boxes),
  + errors::InvalidArgument("Boxes are empty (x1 == x2 or y1 == y2)"));
  if (!context->status().ok()) {
  return;
  }
  @@ -636,8 +637,9 @@ class NonMaxSuppressionV3Op : public OpKernel {
  int num_boxes = 0;
  ParseAndCheckBoxSizes(context, boxes, &num_boxes);
  CheckScoreSizes(context, num_boxes, scores);
  - // check if the boxes have logical coordinates
  - OP_REQUIRES(context, CheckBoxesCoordinates<T>(boxes, num_boxes), errors::InvalidArgument("boxes coordinates shouldn't have x1=x2 or y1=y2"));
  + OP_REQUIRES(
  + context, CheckBoxesCoordinates<T>(boxes, num_boxes),
  + errors::InvalidArgument("Boxes are empty (x1 == x2 or y1 == y2)"));
  if (!context->status().ok()) {
  return;
  }
  @@ -692,8 +694,9 @@ class NonMaxSuppressionV4Op : public OpKernel {
  int num_boxes = 0;
  ParseAndCheckBoxSizes(context, boxes, &num_boxes);
  CheckScoreSizes(context, num_boxes, scores);
  - // check if the boxes have logical coordinates
  - OP_REQUIRES(context, CheckBoxesCoordinates<T>(boxes, num_boxes), errors::InvalidArgument("boxes coordinates shouldn't have x1=x2 or y1=y2"));
  + OP_REQUIRES(
  + context, CheckBoxesCoordinates<T>(boxes, num_boxes),
  + errors::InvalidArgument("Boxes are empty (x1 == x2 or y1 == y2)"));
  if (!context->status().ok()) {
  return;
  }
  