[gnome-shell] magnifier: Fix grayscale effect

[Florian MÃllner <fmuellner src gnome org>]

commit b7018de7e0ddb2f6a1b639b701df1b20802ae86d
Author: Florian MÃllner <fmuellner gnome org>
Date:   Fri Jul 13 20:05:23 2012 +0200

    magnifier: Fix grayscale effect
    
    Commit 8754b2767c1b54e added a grayscale effect to the magnifier,
    but missed actually adding it to the actor.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=674499

 js/ui/magnifier.js |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/js/ui/magnifier.js b/js/ui/magnifier.js
index 8ce70ce..b58af2d 100644
--- a/js/ui/magnifier.js
+++ b/js/ui/magnifier.js
@@ -1648,6 +1648,7 @@ const MagShaderEffects = new Lang.Class({
         this._magView = uiGroupClone;
         this._magView.add_effect(this._inverse);
         this._magView.add_effect(this._brightnessContrast);
+        this._magView.add_effect(this._colorSaturation);
     },
 
     /**