socket leak

[tianjie]

I used sole in my program to generate uuid , and found a sock leak in this line code;
https://github.com/r-lyeh-archived/sole/blob/master/sole.hpp#L604

It could be fixed by using this line code.
if (std::strcmp("lo", ifap->ifa_name) == 0) { close(s); continue;}

Thanks for your work.

[r-lyeh]

Good call! Ty!