Code review comment for lp:~albaguirre/mir/fix-1475571

That check is correct and should probably not be deleted.

I suspect the issue is now we're more careful with pixel format semantics, an invalid format used screencast is being detected. This could be a simple matter of accidentally requesting RGBA for an RGBX framebuffer or mixed up byte ordering. I'm somewhat confident the bug lies in mirscreencast but have not looked yet. Will do so today...