From 81720381b0a91e2081743a016500586fa00c4626 Mon Sep 17 00:00:00 2001
From: Keith Cirkel <keithamus@users.noreply.github.com>
Date: Tue, 11 Apr 2017 22:18:08 +0100
Subject: [PATCH] fix: ensure stringIteratorExists checks String.prototype

Before this change stringIteratorExists checked for Array.prototype
which is an obvious mistake. This shouldn't really affect the majority
of engines because many that supported iterators on Strings also
supported them on Arrays. Phantom 1.9 seems to be the exception.