I adapted some code from a public GitHub repository for a paper, and I have to upload my code to make my work reproducible. I cite the work for which the repository was created in the paper and added comments with a link to the repository in my code wherever I adapted code from it.
The repository includes a readme that states: "If this code was useful, please cite...", but they seem to have forgotten to provide a license.
I assume that this means that it was illegal to even adapt and use the code. I contacted the authors to ask them to upload a license, but I need to upload my code tomorrow because of paper deadline.
What to do? I assume the risk is very low here because the intent of the authors is clearly to provide the code to the scientific community. They just forgot to add the MIT license. Is it common to just ignore such little legal issues in science?