Drop the uselss else blocks as indicated by golint
Drop the uselss else blocks as indicated by golint

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