Fix NaN in worldRotation and worldScale
Fix NaN in worldRotation and worldScale

Acaki/WWW_project,yupaul/phaser-ce,adamlabadorf/bobodyssey,Acaki/WWW_project,adamlabadorf/bobodyssey,adamlabadorf/bobodyssey,yupaul/phaser-ce,natlot/phaser-ce,yupaul/phaser-ce,MasahiroWard/MVPgamedev,MasahiroWard/MVPgamedev,photonstorm/phaser-ce,yupaul/phaser-ce,MasahiroWard/MVPgamedev,photonstorm/phaser-ce,Acaki/WWW_project,natlot/phaser-ce,natlot/phaser-ce,photonstorm/phaser-ce,MasahiroWard/MVPgamedev,photonstorm/phaser-ce,natlot/phaser-ce