fix: infinite loop on dcm with no meta length

[conrad-scherb]

Fixes #326 and contains a test to check that reading is abandoned if no meta length is present.

[github-actions[bot]]

:tada: This PR is included in version 0.29.2 :tada:

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot :package::rocket:

[pieper]

Thanks for the fix and the test 👍