When _PyString_Resize() reports failure, the variable referring to the string we wanted to resize is set to NULL.  Don't Py_DECREF() those variables!  (5 places)
When _PyString_Resize() reports failure, the variable referring to the
string we wanted to resize is set to NULL.  Don't Py_DECREF() those
variables!  (5 places)

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