[gnome-shell] js: Initialize some properties

[Carlos Garnacho <carlosg src gnome org>]

commit 53ac00eabba73c0bf6727393e5067dc4af2a58b1
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Jan 29 17:48:57 2020 +0100

    js: Initialize some properties
    
    Otherwise those can result in the (harmless) "reference to undefined
    property" warnings.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/970

 js/ui/overview.js   | 1 +
 js/ui/shellEntry.js | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/js/ui/overview.js b/js/ui/overview.js
index 82c326b105..10703e300c 100644
--- a/js/ui/overview.js
+++ b/js/ui/overview.js
@@ -137,6 +137,7 @@ class OverviewActor extends St.BoxLayout {
 var Overview = class {
     constructor() {
         this._initCalled = false;
+        this._visible = false;
 
         Main.sessionMode.connect('updated', this._sessionUpdated.bind(this));
         this._sessionUpdated();
diff --git a/js/ui/shellEntry.js b/js/ui/shellEntry.js
index 3e304146e1..c1a1f1134a 100644
--- a/js/ui/shellEntry.js
+++ b/js/ui/shellEntry.js
@@ -166,6 +166,7 @@ class CapsLockWarning extends St.Label {
 
         let seat = Clutter.get_default_backend().get_default_seat();
         this._keymap = seat.get_keymap();
+        this._stateChangedId = 0;
 
         this.connect('notify::mapped', () => {
             if (this.is_mapped()) {