bpo-46383: Fix signature of zoneinfo module_free function (GH-30607) (GH-30610)

(cherry picked from commit cfbde65df318eea243706ff876e5ef834c085e5f)

Co-authored-by: Christian Heimes <christian@python.org>

Co-authored-by: Christian Heimes <christian@python.org>
diff --git a/Modules/_zoneinfo.c b/Modules/_zoneinfo.c
index 04fa094..0388d27 100644
--- a/Modules/_zoneinfo.c
+++ b/Modules/_zoneinfo.c
@@ -2608,7 +2608,7 @@ static PyTypeObject PyZoneInfo_ZoneInfoType = {
 // Specify the _zoneinfo module
 static PyMethodDef module_methods[] = {{NULL, NULL}};
 static void
-module_free(void)
+module_free(void *m)
 {
     Py_XDECREF(_tzpath_find_tzfile);
     _tzpath_find_tzfile = NULL;