On the revprop-caching-ng branch:  Minor refactoring.

* subversion/libsvn_fs_fs/revprops.c
  (close_revprop_generation_file): New function, extracted from ...
  (svn_fs_fs__reset_revprop_generation_file): ... this.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/revprop-caching-ng@1620211 13f79535-47bb-0310-9956-ffa450edef68