LPS-45076  "Cancel Checkout" doesn't work on documents when a vocabulary is required for Documents and Media

Hi Sergio,

we've already discussed this issue, I would like to add one note only:

the issue is not reproducible right now, as it is possible to add/edit documents without required categories.

The fix for this issue is already under review:
https://github.com/jmnavarro/liferay-portal/commit/0a9075a775ee8074e7d352739ce57a1778b7b9f9 

Thanks,
Tamás