On the fsfs-format7 branch:  fix index storage for deltified hashes.

* subversion/libsvn_fs_fs/transaction.c
  (write_hash_delta_rep): correctly determine the size of the rep

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsfs-format7@1438422 13f79535-47bb-0310-9956-ffa450edef68