Avoid a segfault when committing.
Avoid a segfault when committing.

* subversion/libsvn_fs_fs/fs_fs.c
  (get_writable_proto_rev_body): Pass a valid memory pool instead of 0 to
   svn_io_file_seek().

Patch by: steveking
(committing on his behalf because his ASF ICLA is still being processed)


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@881905 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion