Use FlxPoint.weak() instead of FlxPoint.get() for frame size points

[SimonArs]

While I was exploring places in my project where I have point leak I found this place in FlxSprite loadGraphic():

                if (animated)
                        frames = FlxTileFrames.fromGraphic(graph, FlxPoint.get(frameWidth, frameHeight));
                else
                        frames = graph.imageFrame;

Imo this is the perfect place to use a weak point. Moreover, point isnt put anywhere after using

Upd: the same leak in loadRotatedGraphic()