Fix an error leak. Analogous to the one fixed in r30398.

* subversion/libsvn_client/merge.c
  (merge_dir_deleted): Always clear the "failed to delete" error.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@872509 13f79535-47bb-0310-9956-ffa450edef68
1 file changed