Don't process events if the manager has been removed

Author: photonstorm

src/input/mouse/MouseManager.js

@@ -208,7 +208,7 @@ var MouseManager = new Class({
      */
     onMouseMove: function (event)
     {
-        if (event.defaultPrevented || !this.enabled)
+        if (event.defaultPrevented || !this.enabled || !this.manager)
         {
             // Do nothing if event already handled
             return;

src/input/touch/TouchManager.js

@@ -110,7 +110,7 @@ var TouchManager = new Class({
      */
     onTouchStart: function (event)
     {
-        if (event.defaultPrevented || !this.enabled)
+        if (event.defaultPrevented || !this.enabled || !this.manager)
         {
             // Do nothing if event already handled
             return;
@@ -134,7 +134,7 @@ var TouchManager = new Class({
      */
     onTouchMove: function (event)
     {
-        if (event.defaultPrevented || !this.enabled)
+        if (event.defaultPrevented || !this.enabled || !this.manager)
         {
             // Do nothing if event already handled
             return;
@@ -158,7 +158,7 @@ var TouchManager = new Class({
      */
     onTouchEnd: function (event)
     {
-        if (event.defaultPrevented || !this.enabled)
+        if (event.defaultPrevented || !this.enabled || !this.manager)
         {
             // Do nothing if event already handled
             return;