internal/iana: fix a import comment in code generator.

Change-Id: I09adabf07366426451303f72b0f2e6a0869b7508

internal/iana/gen.go

@@ -46,7 +46,7 @@ func main() {
 	fmt.Fprintf(&bb, "// go generate gen.go\n")
 	fmt.Fprintf(&bb, "// GENERATED BY THE COMMAND ABOVE; DO NOT EDIT\n\n")
 	fmt.Fprintf(&bb, "// Package iana provides protocol number resources managed by the Internet Assigned Numbers Authority (IANA).\n")
-	fmt.Fprintf(&bb, `package iana // import "golang.org/x/net/internal/iana"\n\n`)
+	fmt.Fprintf(&bb, `package iana // import "golang.org/x/net/internal/iana"`+"\n\n")
 	for _, r := range registries {
 		resp, err := http.Get(r.url)
 		if err != nil {