Prevent a core dump (openssl_state_machine.c is completely infected with

Prevent a core dump (openssl_state_machine.c is completely infected with
assert()s in place of sensible error handling) when a server-root-relative
certificate path is given (which is what most users are going to try first).
  assertion "n > 0" failed: file "openssl_state_machine.c", line 142
That does NOT fix the openssl_state_machine.c though., So, never try to
use invalid certs, missing keys or other fancy "1st time user" stuff.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@88950 13f79535-47bb-0310-9956-ffa450edef68