Fix a touch of spelling #fail.

* subversion/include/svn_error_codes.h
  (SVN_ERR_FS_PACKED_REVPROP_READ_FAILURE): Was 
    SVN_ERR_FS_PACKED_REVPROP_READ_FAILURE.
  (SVN_ERR_FS_REVPROP_CACHE_INIT_FAILURE): Was
    SVN_ERR_FS_REPPROP_CACHE_INIT_FAILURE.

* subversion/libsvn_fs_fs/fs_fs.c
  (log_revprop_cache_init_warning, read_pack_revprop): Update tweaked
    error code references.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1456664 13f79535-47bb-0310-9956-ffa450edef68