Followup to r18363.  Revert some unneeded changes made in that revision, per discussion with dberlin.
Followup to r18363.  Revert some unneeded changes made in that revision,
per discussion with dberlin.

* subversion/libsvn_delta/svndiff.c
  (read_window_header): Revert the changes made to this function in
    r18363, since the additional 'version' argument wasn't used for
    anything - and because version-checking is better handled by
    a different function anyway.
  (svn_txdelta_read_svndiff_window, svn_txdelta_skip_svndiff_window):
    Partially revert the changes made to these functions in r18363,
    removing the svndiff_version argument from the calls to
    read_window_header().


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@858472 13f79535-47bb-0310-9956-ffa450edef68

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