Added parent to game objects that called CanvasPool.create2D

Author: bitnenfer

src/gameobjects/rendertexture/RenderTexture.js

@@ -124,7 +124,7 @@ var RenderTexture = new Class({
             this.clear = RenderTextureCanvas.clear;
             this.draw = RenderTextureCanvas.draw;
             this.drawFrame = RenderTextureCanvas.drawFrame;
-            this.canvas = CanvasPool.create2D(null, width, height);
+            this.canvas = CanvasPool.create2D(this, width, height);
             this.context = this.canvas.getContext('2d');
         }
 

src/gameobjects/tilesprite/TileSprite.js

@@ -165,7 +165,7 @@ var TileSprite = new Class({
          * @type {HTMLCanvasElement}
          * @since 3.0.0
          */
-        this.canvasBuffer = CanvasPool.create2D(null, this.potWidth, this.potHeight);
+        this.canvasBuffer = CanvasPool.create2D(this, this.potWidth, this.potHeight);
 
         /**
          * [description]