* subversion/libsvn_fs_fs/low_level.c
  (read_change): Fix reporting of the "mergeinfo_mod" flag for changed
                 paths if the flag insn't actually stored in the repo.
                 We must explicitly initialize it to svn_tristate_unknown.

Found by: julianfoad


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1628762 13f79535-47bb-0310-9956-ffa450edef68