ra_serf: Fix pool lifetime bug with the checksum attribute.
ra_serf: Fix pool lifetime bug with the checksum attribute.

(Fixes svnsync tests #1-4.)

* subversion/libsvn_ra_serf/replay.c
  (start_replay): Copy the checksum to a pool that'll live long enough.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@862603 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion