[Builtins] Smi-check the spread and go to runtime in CheckSpreadAndPushToStack.

test/mjsunit/regress/regress-685086.js

Index: test/mjsunit/regress/regress-685086.js
diff --git a/test/mjsunit/regress/regress-685086.js b/test/mjsunit/regress/regress-685086.js
new file mode 100644
index 0000000000000000000000000000000000000000..2cdaec4221b09a1f9632889d537fec0485c9c8e9
--- /dev/null
+++ b/test/mjsunit/regress/regress-685086.js
@@ -0,0 +1,8 @@
+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+try {
+  Math.max(...0);
+} catch (e) {
+}