bpo-39573: Clean up modules and headers to use Py_IS_TYPE() function (GH-18521)

diff --git a/Modules/_abc.c b/Modules/_abc.c
index 7b5d418..e21fe78 100644
--- a/Modules/_abc.c
+++ b/Modules/_abc.c
@@ -82,7 +82,7 @@
     if (impl == NULL) {
         return NULL;
     }
-    if (Py_TYPE(impl) != &_abc_data_type) {
+    if (!Py_IS_TYPE(impl, &_abc_data_type)) {
         PyErr_SetString(PyExc_TypeError, "_abc_impl is set to a wrong type");
         Py_DECREF(impl);
         return NULL;