From ebbef81b0eedc4a0a632f52ef630d25f21d1c9d8 Mon Sep 17 00:00:00 2001
From: Margaret Leibovic <margaret.leibovic@gmail.com>
Date: Tue, 8 Jan 2013 13:18:47 +0100
Subject: [PATCH] Bug 827502 - When trying to reinstall a packaged app, get the
 id from the manifestURL. r=fabrice

---
 dom/apps/src/Webapps.jsm | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/dom/apps/src/Webapps.jsm b/dom/apps/src/Webapps.jsm
index 4753008fc148..47bd09ed36eb 100644
--- a/dom/apps/src/Webapps.jsm
+++ b/dom/apps/src/Webapps.jsm
@@ -1504,6 +1504,11 @@ this.DOMApplicationRegistry = {
     let id = app.syncId || this._appId(app.origin);
     let localId = this.getAppLocalIdByManifestURL(manifestURL);
 
+    // For packaged apps, we need to get the id from the manifestURL.
+    if (localId && !id) {
+      id = this._appIdForManifestURL(manifestURL);
+    }
+
     // Installing an application again is considered as an update.
     if (id) {
       isReinstall = true;