Fixed: cannot read property 'label' of undefined

[bsekachev]

Motivation and context

I am not sure, but I hope the PR fixes issue #1823
I was not able to reproduce it, but watching an additional output, it seems to be that it might be 3rdparty issue.

How has this been tested?

Manual testing

Checklist

• I submit my changes into the develop branch
• I have added description of my changes into CHANGELOG file
• I have updated the documentation accordingly
• I have added tests to cover my changes
• I have linked related issues (read github docs)
• I have increased versions of npm packages if it is necessary (cvat-canvas,
  cvat-core, cvat-data and cvat-ui)

License

• I submit my code changes under the same MIT License that covers the project.
  Feel free to contact the maintainers if that's a concern.
• I have updated the license header for each file (see an example below)

# Copyright (C) 2020 Intel Corporation
#
# SPDX-License-Identifier: MIT

[bsekachev]

@vnishukov

It isn't really great when I write a couple of lines to fix a bug and precommit adds a lot of changes.
It is getting difficult to review the PR.

[coveralls]

Coverage remained the same at 66.695% when pulling 654dc4a on bs/fixed_label_bug into df6e6fd on develop.

[ActiveChooN]

@vnishukov

It isn't really great when I write a couple of lines to fix a bug and precommit adds a lot of changes.
It is getting difficult to review the PR.

Guess it's really strange, for example in our previous linting config we have 4 functional parameters in line restriction as i remember.