V8.2 replaces signal() with ssh_signal(). However, fuzz.c, test_helper.c files uses signal().
This is harmless but surprising difficult to fix, because of circular dependencies in the source. I think we'll just leave the unit tests using the system signal() call, since we don't need to be particularly careful wrt interrupted syscalls as we do in ssh/sshd
closing bugs resolved before openssh-8.9