gh-103617: Fix compiler warning in _iomodule.c (#103618)

diff --git a/Modules/_io/_iomodule.c b/Modules/_io/_iomodule.c
index 5644cc05c45800630bc4b4e970d53fa40be06a46..7f4f1d939fb7e9da555f22b7f6ff6cfd6a51da00 100644 (file)
--- a/Modules/_io/_iomodule.c
+++ b/Modules/_io/_iomodule.c
@@ -616,8 +616,9 @@ iomodule_clear(PyObject *mod) {
 }
 
 static void
-iomodule_free(PyObject *mod) {
-    iomodule_clear(mod);
+iomodule_free(void *mod)
+{
+    (void)iomodule_clear((PyObject *)mod);
 }