Merge r1365479 from trunk:

* modules/proxy/proxy_util.c (ap_proxy_location_reverse_map): Fix
  to skip balancer:// prefix where applicable.

Reviewed by: jorton, jim, rjung
PR: 45434 (regressed since 2.2)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1365604 13f79535-47bb-0310-9956-ffa450edef68