fdclose function in perl

[Mariusz Zaborski]

Hello,

Some time ago I implemented a function called fdclose.
Idea of this function is to free FILE structure but leave/return
underlining descriptor.
Perl is one of the programs which I would like to patch.

So where would be good place to put it?
Should I try to patch perl directly with some FREEBSD_VERSION, or we should
add this file [1] to the port?

Thanks,
Mariusz

[1] https://people.freebsd.org/~oshogbo/perl-fdclose.patch