Support for OpenSSL 1.1.0:

- Fix typo in loop end condition

This code will be removed next. Thex fix is
for the case we want to roll teh code back
to this state.

Backport of r1730314 from trunk.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x-openssl-1.1.0-compat@1755837 13f79535-47bb-0310-9956-ffa450edef68