Merge r1592511, r1592514 from trunk:

reformat only (get rid of unnecessary block scope)

Clarify an existing requirement of the server_portstr parameter
to ap_proxy_determine_connection(): it must be a buffer of at
least one byte in size.

(And don't bother with using strcpy in order to zap a string.)

Submitted by: trawick
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1598605 13f79535-47bb-0310-9956-ffa450edef68