pointerA11yTimeout: Fix style nit

There's a stray space after the opening parentheses. While at it,
reindent the object literal.

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/654

js/ui/pointerA11yTimeout.js

@@ -11,10 +11,12 @@ class PieTimer extends St.DrawingArea {
         this._y = 0;
         this._startTime = 0;
         this._duration = 0;
-        super._init( { style_class: 'pie-timer',
+        super._init({
+            style_class: 'pie-timer',
             visible: false,
             can_focus: false,
-                       reactive: false });
+            reactive: false
+        });
     }
 
     vfunc_repaint() {