backport from trunk:

Fix build failure with non-threaded APR on AIX.

PR:           34655
Submitted by: Ryan Murray <rmurray+apache cyberhqz.com>
Reviewed by:  trawick


git-svn-id: https://svn.apache.org/repos/asf/apr/apr-util/branches/0.9.x@165140 13f79535-47bb-0310-9956-ffa450edef68
2 files changed