Add DONT_MAKE_RESULT_READY to unicodeobject.c to help detecting bugs
Add DONT_MAKE_RESULT_READY to unicodeobject.c to help detecting bugs

Use also _PyUnicode_READY_REPLACE() when it's applicable.

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