* mod_ssl: Fix renegotiation failures redirected to an ErrorDocument. PR 57334.

* mod_ssl: Fix renegotiation failures redirected to an ErrorDocument. PR 57334.

When this occurs, the redirect (internal) request reaches ssl_hook_Access()
and make SSL_do_handshake crash probably because we force the renegotiation
based on an incomplete SSL state.

To avoid this, ssl_hook_Access() now returns FORBIDDEN immediatly if the given
SSL connection is not in a valid (handshaken) state.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1644498 13f79535-47bb-0310-9956-ffa450edef68