Lost the prior log message ... [this is an empty commit]

  Prior revision fixes the last ap_server_root_relative() NULL return
  code potential segfaults.  It also quits trying to server_root_relative
  a logging pipe, since log pipes generally take arguments.  However, it
  ignores the PassPhraseDialog exec: since the argument to that shell
  mechanism is the server name itself.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93972 13f79535-47bb-0310-9956-ffa450edef68