fixed crash when a model of a renderable is changed
fixed crash when a model of a renderable is changed

JakubLukas/LumixEngine,zhouxh1023/LumixEngine,gamedevforks/LumixEngine,JakubLukas/LumixEngine,zhouxh1023/LumixEngine,galek/LumixEngine,gamedevforks/LumixEngine,galek/LumixEngine,dreamsxin/LuxEngine,JakubLukas/LumixEngine,dreamsxin/LuxEngine