On the fsfs-format7 branch: fix NULL pointer access when reading a
containered representation due to missing struct member.

* subversion/libsvn_fs_fs/cached_data.c
  (create_rep_state_body): provide a file access structure

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsfs-format7@1490963 13f79535-47bb-0310-9956-ffa450edef68