Exceptions lifetime can be extended by an exception_ptr

Clause / Subclause / Annex: 
15.1
Para/Table/Figure: 
4
Comment type: 
Te
Comment / justification for change: 

With the new crrent_exception API it is possible to capture a reference to an exception that will outlive its last active handler. That is in conflict with the sentance “When the last remaining active handler for the exception exits by any means other than throw; the temporary object is destroyed and the implementation may deallocate the memory for the temporary object;”

Recommended change: 

Update sentence to allow for exceptions held in excpetion_ptr objects.

MB: 
UK