* subversion/include/private/svn_wc_private.h
  (svn_wc__check_for_obstructions): Remove unused optional output argument.

* subversion/libsvn_client/merge.c
  (perform_obstruction_check): Remove unused optional output argument.

  (merge_dir_props_changed,
   merge_file_changed,
   merge_file_added,
   merge_file_deleted,
   merge_dir_added,
   merge_dir_deleted,
   merge_dir_opened,
   record_skips): Update caller.

* subversion/libsvn_wc/node.c
  (svn_wc__check_for_obstructions): Remove unused optional output argument.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1435429 13f79535-47bb-0310-9956-ffa450edef68