fix scale9sprite flip issue

### Problem description.:
- When set Scale9Sprite's setFlippedX(false) and setFlippedY(false), the scale9Sprite will be flipped.
- When settings the scale and flip property at the same time, the result would be wrong.

### After apply this patch
- It shouldn't be flipped when set flip to false.
- And it also fix the the scale and flip conflict issue.