[PATCH] iftop: fix compilation with GCC 10

[Rosen Penev]

> On Jul 17, 2020, at 2:50 AM, Petr Štetiar <ynezz at true.cz> wrote:
> 
> Rosen Penev <rosenp at gmail.com> [2020-07-13 22:43:51]:
> 
> Hi,
> 
>> GCC 10 defaults to fno-common, which demains unique defenitions.
> 
> whats the exact error here? Wouldn't it make sense to move this into packages feed?
No idea what this package is for or the reason for its presence here.
> What about upstream, looks like they might find this patch handy.
Seems relatively dead upstream. Last commit one year ago and second to last three years ago.
> 
> -- ynezz