[polari/wip/fmuellner/fix-js-warning] mainWindow: Avoid warning when no room was selected previously

[Florian Müllner <fmuellner src gnome org>]

commit 8373cc4a77010189234f8386a1abb782911d6049
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Mar 9 12:06:39 2019 +0100

    mainWindow: Avoid warning when no room was selected previously
    
    On startup we first load the previously joined rooms, then select
    the last selected one. However the setting for the latter may return
    an empty object (when there were no rooms to restore), resulting in
    a JS warning about accessing an undefined property.
    
    Add a check to avoid that warning.
    
    https://gitlab.gnome.org/GNOME/polari/merge_requests/100

 src/mainWindow.js | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/src/mainWindow.js b/src/mainWindow.js
index f320657..a64d97a 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -330,6 +330,9 @@ var MainWindow = GObject.registerClass({
         for (let prop in selectedRoom)
             selectedRoom[prop] = selectedRoom[prop].deep_unpack();
 
+        if (!selectedRoom.hasOwnProperty('account'))
+            return;
+
         let roomId = null;
         let account = this._accountsMonitor.lookupAccount(selectedRoom.account);
         let channelName = selectedRoom.channel;