Merge r1534890 from trunk:

axe attempt to close a previously-closed apr socket
(clang scan-build says "uninitialized", but it doesn't know
how apr_sockaddr_info_get() reports errors)

Submitted by: trawick
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1560084 13f79535-47bb-0310-9956-ffa450edef68