Fix some very minor nits in ap_proxy_http_request() which make it
  quite simple to diff to the current trunk/ code, ensuring the most
  accurate review possible.

  Consists only of whitespace and line spacing changes, and a change
  from 'bb' to 'header_brigade' for this local argument variable's name,
  so there are no functional changes here.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/proxy-reqbody-2.0.x@230741 13f79535-47bb-0310-9956-ffa450edef68