followup to r1587036.

if backend->close is set too early, proxy_util.c will close it right 
away and then blow away the field.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1587654 13f79535-47bb-0310-9956-ffa450edef68
whitespace changes only


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1587657 13f79535-47bb-0310-9956-ffa450edef68