Move a calculation closer to its point of use, and reduce it to being done in only one place.
Move a calculation closer to its point of use, and reduce it to being done
in only one place.

* subversion/libsvn_wc/update_editor.c
  (file_baton): Remove 'text_base_abspath'.
  (apply_textdelta): Don't set FB->text_base_abspath here.
  (merge_file): Determine 'text_base_abspath' here.
  (close_file): Don't set FB->text_base_abspath here.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@943336 13f79535-47bb-0310-9956-ffa450edef68

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