The only people responsible for child abuse are child abusers. If you - as an adult - haven't abused a child, your conscience is clear. There are no ifs or buts with that one.
The only exception to the 'if you haven't abused a child part' is if you have abused a child when still legally a child yourself. That is a gray area.
But, you are not in any way shape or form responsible for the actions of your abuser. You are only accountable for the actions of you, and not telling about your abuse in childhood doesn't even come close to getting a one way ticket to hell. It doesn't even bring you anywhere near the ticket line.