ScreenShield: make .lock() and .unlock() idempotent
Those methods can be called multiple times in certain situations, and will be even more so after hooking them to the system bus.
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@ -616,11 +616,13 @@ const ScreenShield = new Lang.Class({
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this._lightbox.hide();
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if (this._isModal) {
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Main.popModal(this.actor);
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this.actor.hide();
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this._isModal = false;
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}
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this._isLocked = false;
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this.actor.hide();
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this.emit('lock-status-changed', false);
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},
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