[gnome-shell] ripples: Remove unreachable return statements

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

commit 6970f43e666f7f6f091a0829cbfbfb370d9d775e
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Jun 29 14:36:13 2019 +0200

    ripples: Remove unreachable return statements
    
    Throwing an exception stops execution of the current function,
    so the following return statements are both unnecessary and
    unreachable.
    
    Spotted by eslint.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/606

 js/ui/ripples.js | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)
---
diff --git a/js/ui/ripples.js b/js/ui/ripples.js
index 37d7362de..96abe181a 100644
--- a/js/ui/ripples.js
+++ b/js/ui/ripples.js
@@ -61,10 +61,8 @@ var Ripples = class Ripples {
     }
 
     addTo(stage) {
-        if (this._stage !== undefined) {
+        if (this._stage !== undefined)
             throw new Error('Ripples already added');
-            return;
-        }
 
         this._stage = stage;
         this._stage.add_actor(this._ripple1);
@@ -73,10 +71,8 @@ var Ripples = class Ripples {
     }
 
     playAnimation(x, y) {
-        if (this._stage === undefined) {
+        if (this._stage === undefined)
             throw new Error('Ripples not added');
-            return;
-        }
 
         this._x = x;
         this._y = y;