Sprite's tintedTexture can't be removed when call destroy

[taoabc]

This Issue is about

• A bug in the API: PIXI.Sprite.destroy
  • Phaser version(s): 2.13.3
  • Live example: none
  • What steps produce the bug: 1. set tint color for sprite, 2. call sprite.destroy
  • What should happen: Phaser.CanvasPool.pool will free canvas which sprite used
  • What happens instead: Phaser.CanvasPool.pool keep growing
  • If there's an error: Not a error, maybe memory leak.
  • What's the error message? none
  • What's the error trace (expand the error message)? none

I'm not sure if this is a normal behavior or a issue. But when I keep new sprite and destroy, the Phaser.CanvasPool.pool keep growing and it's remove function never be called.