long_true_divide():  decref its converted arguments.  test_long_future.py
run in an infinite loop no longer grows.  Thanks to Neal Norwitz for
determining that test leaked!
diff --git a/Objects/longobject.c b/Objects/longobject.c
index 5141d53..899c940 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -1615,12 +1615,15 @@
 {
 	PyLongObject *a, *b;
 	double ad, bd;
-	int aexp, bexp;
+	int aexp, bexp, failed;
 
 	CONVERT_BINOP(v, w, &a, &b);
 	ad = _PyLong_AsScaledDouble((PyObject *)a, &aexp);
 	bd = _PyLong_AsScaledDouble((PyObject *)b, &bexp);
-	if ((ad == -1.0 || bd == -1.0) && PyErr_Occurred())
+	failed = (ad == -1.0 || bd == -1.0) && PyErr_Occurred();
+	Py_DECREF(a);
+	Py_DECREF(b);
+	if (failed)
 		return NULL;
 
 	if (bd == 0.0) {