Extend the fixed-length int representation fixes to sig0.go
Extend the fixed-length int representation fixes to sig0.go

skynet/dns,josephyzhou/dns,benbearchen/dns,tempbottle/dns,jmhodges/dns,michaelharo/dns,curtiszimmerman/dns,cloudflare/dns,janstk/dns,miekg/dns,bragr/dns,Git-Host/dns,modulexcite/dns,Psiphon-Inc/dns,ym/go-dns,jdef/dns,flebarbe/dns,asergeyev/dns,skyportsystems/dns,rolandshoemaker/dns,letsencrypt/dns,tsenart/dns,hugozhu/dns,ezoic/dns,ErikDubbelboer/dns,bboreham/dns