Merge r1800594 from trunk:

* Do not apply the strict permissions of the temporary file to a possibly
  existing passwd file.
  This long standing bug was triggered by fixing a bug in APR in r1791029.

PR: 61240

Submitted by: rpluem
Reviewed by: rpluem, ylavic, jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1800775 13f79535-47bb-0310-9956-ffa450edef68