Insure that ap_get_client_block _always_ sets the length parm positive when

calling ap_get_brigade.  This takes care of the loop with short request bodies
seen on 2.0.27.

This eliminates the use of r->remaining within ap_get_client_block.
http_filter has the equivalent in its context.  r->remaining is
still used in ap_setup_client_block for a "body too long" check.  But that
check can't cover chunked bodies, so it probably should happen elsewhere.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@91785 13f79535-47bb-0310-9956-ffa450edef68