ShadowGenerator: Fix crash when disposing meshes after updating mapSize
ShadowGenerator: Fix crash when disposing meshes after updating mapSize
sebavan/Babylon.js,BabylonJS/Babylon.js,RaananW/Babylon.js,RaananW/Babylon.js,BabylonJS/Babylon.js,sebavan/Babylon.js,sebavan/Babylon.js,RaananW/Babylon.js,BabylonJS/Babylon.js