Follow-up to r16295: Factor FSFS format reading into a separate function, incidentally fixing an uninitialized-var reference.
Follow-up to r16295: Factor FSFS format reading into a separate
function, incidentally fixing an uninitialized-var reference.

* subversion/libsvn_fs_fs/fs_fs.c (read_format): New.
  (svn_fs_fs__open, svn_fs_fs__hotcopy): Call read_format.
   Remove unused variable 'err'.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion