bpo-30459: Cast the result of PyCell_SET to void (GH-23654)
diff --git a/Include/cellobject.h b/Include/cellobject.h
index f12aa90..81bc784 100644
--- a/Include/cellobject.h
+++ b/Include/cellobject.h
@@ -20,7 +20,7 @@ PyAPI_FUNC(PyObject *) PyCell_Get(PyObject *);
PyAPI_FUNC(int) PyCell_Set(PyObject *, PyObject *);
#define PyCell_GET(op) (((PyCellObject *)(op))->ob_ref)
-#define PyCell_SET(op, v) (((PyCellObject *)(op))->ob_ref = v)
+#define PyCell_SET(op, v) ((void)(((PyCellObject *)(op))->ob_ref = v))
#ifdef __cplusplus
}