userMenu: Hide menu immediately before suspending

The same logic as for commit 1f30670c1d applies to the case
where we lock the screen before suspending - we don't want the
menu to jump to the opposite screen side to fade out, so remove
the animation altogether.

https://bugzilla.gnome.org/show_bug.cgi?id=686484

js/ui/userMenu.js

@@ -854,6 +854,7 @@ const UserMenuButton = new Lang.Class({
                     this._upClient.suspend_sync(null);
                 }));
 
+                this.menu.close(BoxPointer.PopupAnimation.NONE);
                 Main.screenShield.lock(true);
             } else {
                 this._upClient.suspend_sync(null);