If the listening socket goes into some error state we'll get
std::io::Errors rather than higher level errors from the
native_tls::TlsAcceptor, those are usually fatal. (Ran into
this after performing a shutdown() on the file descriptor,
after which the future just endlessly loops in accept().)
Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
1c042cdc6c