Refuse to delete /control_in or /control_out (fix crashes e.g. select-all + delete).
Refuse to delete /control_in or /control_out (fix crashes e.g. select-all + delete).


git-svn-id: fb6d863945102bebb9fe1d25d24b18a16295c170@2464 a436a847-0d15-0410-975c-d299462d15a1

drobilla/ingen,ventosus/ingen,ventosus/ingen,drobilla/ingen,ventosus/ingen,drobilla/ingen,ventosus/ingen,drobilla/ingen