Add license header and fix lint warning

server/tlsconfig.go

@@ -1,3 +1,17 @@
+// Copyright 2017 Pilosa Corp.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package server
 
 import (
@@ -33,7 +47,7 @@ func NewKeypairReloader(certPath, keyPath string, logger *log.Logger) (*keypairR
 	go func() {
 		c := make(chan os.Signal, 1)
 		signal.Notify(c, syscall.SIGHUP)
-		for _ = range c {
+		for range c {
 			logger.Printf("Received SIGHUP, reloading TLS certificate and key from %q and %q", certPath, keyPath)
 			if err := result.maybeReload(); err != nil {
 				logger.Printf("Keeping old TLS certificate because the new one could not be loaded: %v", err)