make newvarobj's size arg signed
diff --git a/Include/longintrepr.h b/Include/longintrepr.h
index a5b1b36..2a911c2 100644
--- a/Include/longintrepr.h
+++ b/Include/longintrepr.h
@@ -62,7 +62,7 @@
 
 struct _longobject {
 	PyObject_HEAD
-	int ob_size; /* XXX Hack! newvarobj() stores it as unsigned! */
+	int ob_size;
 	digit ob_digit[1];
 };
 
diff --git a/Include/objimpl.h b/Include/objimpl.h
index cb27c7c..139e337 100644
--- a/Include/objimpl.h
+++ b/Include/objimpl.h
@@ -48,7 +48,7 @@
 */
 
 extern PyObject *_PyObject_New Py_PROTO((PyTypeObject *));
-extern varobject *_PyObject_NewVar Py_PROTO((PyTypeObject *, unsigned int));
+extern varobject *_PyObject_NewVar Py_PROTO((PyTypeObject *, int));
 
 #define PyObject_NEW(type, typeobj) ((type *) _PyObject_New(typeobj))
 #define PyObject_NEW_VAR(type, typeobj, n) ((type *) _PyObject_NewVar(typeobj, n))