Merge r1556428 from trunk:

mod_dav: Keep track of length of cdata properly when removing leading spaces.

* modules/dav/main/util.c
  (dav_xml_get_cdata): reduce len variable when increasing cdata pointer.

Submitted by: Amin Tora <Amin.Tora neustar.biz>

Reviewed by: breser, rpluem, gstein, wrowe


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1576706 13f79535-47bb-0310-9956-ffa450edef68