columnControl with dt-control adds control icon to second header row

pizzacat

Link to test case:
https://live.datatables.net/pizzacat/1/edit

Debugger code (debug.datatables.net):
None

Error messages shown:
None

Description of problem:
When using columnControl with two header rows and a column designated as dt-control, the control icon appears in the second header row.

allan

Thanks for the test case! I've committed this change which I'll release in DataTables 2.3.2 before the end of the week.

Allan