The apr_port_t type is unsigned, but ab was using a signed format code in

its reports. PR 42070. Submitted by Takashi Sato serai  lans-tv.com, 
reviewed by sctemme.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@526584 13f79535-47bb-0310-9956-ffa450edef68