--no-mime-check stops iso label from being added

[Sporif]

I was using --no-mime-check just to get rid of the warning, but it appears that the iso label isn't applied when you do so. I think this behaviour should be made clear in the usage text or changed so the iso label is always added.

Edit: I see that the next version seems to have has this fixed, so should I'll close this issue once it's released.

[jsamr]

@Sporif Thanks for the feedback. I'll check that up in #next branch. Also, -M shortcut for --no-mime-check in next ;-).