remove unneeded default case in switch

Author: marten-seemann

net/private.go

@@ -72,8 +72,6 @@ func IsPublicAddr(a ma.Multiaddr) bool {
 		switch c.Protocol().Code {
 		case ma.P_IP6ZONE:
 			return true
-		default:
-			return false
 		case ma.P_IP4:
 			ip := net.IP(c.RawValue())
 			isPublic = !inAddrRange(ip, Private4) && !inAddrRange(ip, Unroutable4)
@@ -93,8 +91,6 @@ func IsPrivateAddr(a ma.Multiaddr) bool {
 		switch c.Protocol().Code {
 		case ma.P_IP6ZONE:
 			return true
-		default:
-			return false
 		case ma.P_IP4:
 			isPrivate = inAddrRange(net.IP(c.RawValue()), Private4)
 		case ma.P_IP6: