libgo: Update from Go 1.5 to Go 1.5.1.

    
    Reviewed-on: https://go-review.googlesource.com/16527

From-SVN: r229624

1 files changed, 3 insertions, 0 deletions

diff --git a/libgo/go/net/lookup.go b/libgo/go/net/lookup.go
index a7ceee823f1..9008322dc5a 100644
--- a/libgo/go/net/lookup.go
+++ b/libgo/go/net/lookup.go
@@ -123,6 +123,9 @@ func lookupIPDeadline(host string, deadline time.Time) (addrs []IPAddr, err erro
 
 // LookupPort looks up the port for the given network and service.
 func LookupPort(network, service string) (port int, err error) {
+	if n, i, ok := dtoi(service, 0); ok && i == len(service) {
+		return n, nil
+	}
 	return lookupPort(network, service)
 }