Merge 1797550 from trunk:

mod_mime: fix quoted pair scanning


Submitted By: ylavic
Reviewed By: covener, ylavic, jim
 




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1797653 13f79535-47bb-0310-9956-ffa450edef68