[gnome-shell] weather: Fix warning on closing Weather

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit ad55cb6d5ddbef67ae84901e48f82bcdb7c98887
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Aug 1 01:24:13 2019 +0200

    weather: Fix warning on closing Weather
    
    GDBusProxy::g-properties-changed is also emitted when the name drops from
    the bus, at which point any properties will be null. That's not a valid
    gsettings value, so to avoid the corresponding warning, move the g-name-owner
    check accordingly.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/issues/1158

 js/misc/weather.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/js/misc/weather.js b/js/misc/weather.js
index 3e1a2ba86..f097c76f6 100644
--- a/js/misc/weather.js
+++ b/js/misc/weather.js
@@ -153,12 +153,13 @@ var WeatherClient = class {
 
         this._weatherProxy.connect('g-properties-changed',
             this._onWeatherPropertiesChanged.bind(this));
-
-        if (this._weatherProxy.g_name_owner != null)
-            this._onWeatherPropertiesChanged();
+        this._onWeatherPropertiesChanged();
     }
 
     _onWeatherPropertiesChanged() {
+        if (this._weatherProxy.g_name_owner == null)
+            return;
+
         this._settings.set_boolean('automatic-location',
             this._weatherProxy.AutomaticLocation);
         this._settings.set_value('locations',