merge 3.2
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 1eb24dd..fd9175d 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -12591,9 +12591,13 @@
y_data = PyUnicode_DATA(y);
for (i = 0; i < PyUnicode_GET_LENGTH(x); i++) {
key = PyLong_FromLong(PyUnicode_READ(x_kind, x_data, i));
- value = PyLong_FromLong(PyUnicode_READ(y_kind, y_data, i));
- if (!key || !value)
+ if (!key)
goto err;
+ value = PyLong_FromLong(PyUnicode_READ(y_kind, y_data, i));
+ if (!value) {
+ Py_DECREF(key);
+ goto err;
+ }
res = PyDict_SetItem(new, key, value);
Py_DECREF(key);
Py_DECREF(value);