On 1.9.x-issue4722 branch: fix the commit checksum failure.
* subversion/libsvn_fs_fs/cached_data.c
(svn_fs_fs__get_contents_from_file): Set expanded_size in rep.
Found by: Myria <myriachan{_AT_}gmail.com>
git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.9.x-issue4722@1826272 13f79535-47bb-0310-9956-ffa450edef68