scene.fogEnabled=true crashes Codea

Bugs
1

@Simeon, @John, setting scene.fogEnabled=true crashes latest Codea and dumps a lot of Shader code to the side panel.

2

@piinthesky argh thanks for the report

3

@Simeon @John, this bug is still around!

4

@piinthesky Found and fixed a bug in the physically based shader that only occurs when fog is enabled

5

@John fog is working okay now, thanks.