bpo-32436: Fix compiler warning (#5483)

1st1 · web-flow · commit 55e0839f2672 · 2018-02-01T22:24:56.000-05:00
diff --git a/Python/hamt.c b/Python/hamt.c
@@ -2358,6 +2358,8 @@ _PyHamt_Without(PyHamtObject *o, PyObject *key)
             Py_INCREF(o);
             return o;
         case W_NEWNODE: {
+            assert(new_root != NULL);
+
             PyHamtObject *new_o = hamt_alloc();
             if (new_o == NULL) {
                 Py_DECREF(new_root);
