Replace the "unknown_node_kind" helper function with a macro, "UNKNOWN_NODE_KIND", in order to preserve line-number information in errors.
Replace the "unknown_node_kind" helper function with a macro,
"UNKNOWN_NODE_KIND", in order to preserve line-number information
in errors.

Suggested by: rooneg

* subversion/libsvn_fs_base/reps-strings.c
  (unknown_node_kind): Remove.
  (UNKNOWN_NODE_KIND): New macro.
  (rep_read_range, svn_fs_base__delete_rep_if_mutable,
   svn_fs_base__rep_contents_size, rep_write, svn_fs_base__rep_deltify):
   Use the new macro, rather than the helper function.

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