VFB autosave light problem

[Sovcat]

My frame buffer window and autosave outputs are different.
If I use the frame buffer window to save an .exr (ive tested both 32bit & 16bit / RGB & RGBA). And the results are the same as the frame buffer window.
However the autosaved exr looks way off in terms of lighting or gamma, i'm not too sure whats wrong.

[Ondra]

there was indeed some error after some rewriting. Fixed, hopefully ;)