On the fs-rep-sharing branch: Fix a segfault arising from caching non-existant representations.
On the fs-rep-sharing branch:
Fix a segfault arising from caching non-existant representations.

* subversion/libsvn_fs_fs/fs_fs.c
  (write_final_rev): Don't cache a NULL data_rep.


git-svn-id: b8cc343a69b1f0cbd825b978e2a42c89704f90e3@873458 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion