Merge r726636 from trunk:

* Do not add an empty argument if we do not have any args for the script.
  Fixes a regression from r682475.

PR: 46380

Reviewed by: rpluem, covener, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@800410 13f79535-47bb-0310-9956-ffa450edef68