Fix error introduced by r58288; if a tuple is length 0 return its repr and don't worry about any self-referring tuples.
Fix error introduced by r58288; if a tuple is length 0 return its repr and
don't worry about any self-referring tuples.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator