Use Py_ssize_t for PyArg_UnpackTuple arguments.
diff --git a/Python/getargs.c b/Python/getargs.c
index 2af9d88..e14a07b 100644
--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -1662,9 +1662,9 @@
 
 
 int
-PyArg_UnpackTuple(PyObject *args, const char *name, int min, int max, ...)
+PyArg_UnpackTuple(PyObject *args, const char *name, Py_ssize_t min, Py_ssize_t max, ...)
 {
-	int i, l;
+	Py_ssize_t i, l;
 	PyObject **o;
 	va_list vargs;