Some minor clean-up for r21152.
Some minor clean-up for r21152.

Patch by: ivan

* subversion/libsvn_wc/copy.c
  (copy_added_dir_administratively): New variable to replace multiple calls
  to svn_wc_adm_access_path(), remove unused variables, determine dst_path
  only if necessary.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@861232 13f79535-47bb-0310-9956-ffa450edef68

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