Make the 2 versions of delete more similar

[Jonathan Wakely]

On 2 October 2013 13:28, Marc Glisse wrote:
> Hello,
>
> I don't understand why those 2 files differ by more than 1 extra argument,
> so I am changing that.
>
> Bootstrap and testsuite on x86_64.
>
> 2013-10-03  Marc Glisse  <marc.glisse@inria.fr>
>
>         * libsupc++/del_op.cc (operator delete): Don't test for 0 before
> free.
>         * libsupc++/del_opnt.cc (free): Only declare if freestanding.
>         (operator delete): Qualify free with std::.

Looks good to me, thanks.