Fixed a recently introduced off-by-one-character bug in

mod_rewrite's expansion of expression back-references.

Submitted by: Cliff Woolley <jwoolley@wlu.edu>
Reviewed by: Ralf S. Engelschall
PR: 4766, 5389


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@84221 13f79535-47bb-0310-9956-ffa450edef68