bpo-39573: Finish converting to new Py_IS_TYPE() macro (GH-18601)
diff --git a/Modules/cjkcodecs/multibytecodec.h b/Modules/cjkcodecs/multibytecodec.h
index 94670ec..4d2b355 100644
--- a/Modules/cjkcodecs/multibytecodec.h
+++ b/Modules/cjkcodecs/multibytecodec.h
@@ -65,7 +65,7 @@
MultibyteCodec *codec;
} MultibyteCodecObject;
-#define MultibyteCodec_Check(op) (Py_TYPE(op) == &MultibyteCodec_Type)
+#define MultibyteCodec_Check(op) Py_IS_TYPE((op), &MultibyteCodec_Type)
#define _MultibyteStatefulCodec_HEAD \
PyObject_HEAD \