[gnome-shell/gnome-3-26] dateMenu: Ignore malformed world-clocks settings

[Bastien Nocera <hadess src gnome org>]

commit b7b59d78b5a011fbae05786decbdd5a710ca9dba
Author: Bastien Nocera <hadess hadess net>
Date:   Mon Dec 4 14:30:01 2017 +0100

    dateMenu: Ignore malformed world-clocks settings
    
    Guard against a malformed setting that doesn't contain a
    'location' key.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=791148

 js/ui/dateMenu.js |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/dateMenu.js b/js/ui/dateMenu.js
index 1d48fa8..5908c90 100644
--- a/js/ui/dateMenu.js
+++ b/js/ui/dateMenu.js
@@ -132,6 +132,8 @@ var WorldClocksSection = new Lang.Class({
         let world = GWeather.Location.get_world();
         let clocks = settings.get_value('world-clocks').deep_unpack();
         for (let i = 0; i < clocks.length; i++) {
+            if (!clocks[i].location)
+                continue;
             let l = world.deserialize(clocks[i].location);
             this._locations.push({ location: l });
         }