Auto_Bed_Leveling: Enhanced G29 command

[Roxy]

Thank You for pointing that out. That was sloppy cutting & pasting.

Yes, each 'case ??:' gets a break normally. That keeps the code from falling through into the next 'case'. Usually (but not always) you want a 'break' after the code for a given case. And certainly for this invalidate code, you want to break after it finishes.

I put the 'break' in the correct place on that post.