Call strlen() if name length provided is 0, like OpenSSL does.
Issue notice by Christian Heimes <christian@python.org>
ok deraadt@ jsing@
X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)
{
	param->flags &= ~flags;
	return 1;
}

X509_VERIFY_PARAM_clear_flags(X509_VERIFY_PARAM *param, unsigned long flags)
{
	param->flags &= ~flags;
	return 1;
}
