AggregateError: If NewTarget is undefined, let newTarget be the active function object (#2537)

test/built-ins/NativeErrors/AggregateError/newtarget-is-undefined.js

@@ -0,0 +1,19 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-aggregate-error
+description: >
+  NewTarget is undefined
+info: |
+  AggregateError ( errors, message )
+
+  1. If NewTarget is undefined, let newTarget be the active function object, else let newTarget be NewTarget.
+
+features: [AggregateError]
+---*/
+
+var obj = AggregateError([], '');
+
+assert.sameValue(Object.getPrototypeOf(obj), AggregateError.prototype);
+assert(obj instanceof AggregateError);