Merge r1412278 from https://svn.apache.org/repos/asf/httpd/httpd/trunk/:

mod_dumpio: Correctly log large messages + style issues
PR 54179 

Submitted by: Marek Wianecki
Reviewed by: jailletc36, sf, druggeri




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1416749 13f79535-47bb-0310-9956-ffa450edef68