Followup to r1100287, avoiding unnecessary work.  Doh!
Followup to r1100287, avoiding unnecessary work.  Doh!

* subversion/libsvn_ra_serf/commit.c
  (post_headers_iterator_callback): Don't even bother duping the
    transaction name -- we care only to combine it with the stub URLs.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion