From f949a44d41b439138b84336e0f3d12784746f44d Mon Sep 17 00:00:00 2001
From: "Robert (Jamie) Munro" <rjmunro@arjam.net>
Date: Mon, 9 Feb 2015 11:31:53 +0000
Subject: [PATCH] Fix "'Cannot set property 'forwardViewId' of undefined'"

As found here:
http://forum.ionicframework.com/t/cannot-set-property-forwardviewid-of-undefined/15512/2
---
 js/angular/service/history.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/js/angular/service/history.js b/js/angular/service/history.js
index 2d42e8bef4..b180ac6cc9 100644
--- a/js/angular/service/history.js
+++ b/js/angular/service/history.js
@@ -391,6 +391,10 @@ function($rootScope, $state, $location, $window, $timeout, $ionicViewSwitcher, $
           if (hist.stack[x].viewId == viewId) {
             action = 'dupNav';
             direction = DIRECTION_NONE;
+            if (x != 0) {
+              hist.stack[x - 1].forwardViewId = null;
+            }
+            viewHistory.forwardView = null;
             hist.stack[x - 1].forwardViewId = viewHistory.forwardView = null;
             viewHistory.currentView.index = viewHistory.backView.index;
             viewHistory.currentView.backViewId = viewHistory.backView.backViewId;