Remove explicit nil initialization and correct error string.

cmd/hyperkube/main.go

@@ -170,7 +170,7 @@ func makeSymlinks(targetName string, commandFns []func() *cobra.Command) error {
 	}
 
 	if errs {
-		return errors.New("Error creating one or more symlinks.")
+		return errors.New("Error creating one or more symlinks")
 	}
 	return nil
 }

cmd/kube-controller-manager/app/core.go

@@ -82,8 +82,8 @@ func startServiceController(ctx ControllerContext) (http.Handler, bool, error) {
 }
 
 func startNodeIpamController(ctx ControllerContext) (http.Handler, bool, error) {
-	var clusterCIDR *net.IPNet = nil
-	var serviceCIDR *net.IPNet = nil
+	var clusterCIDR *net.IPNet
+	var serviceCIDR *net.IPNet
 
 	if !ctx.ComponentConfig.KubeCloudShared.AllocateNodeCIDRs {
 		return nil, false, nil

pkg/controller/endpoint/doc.go

@@ -14,6 +14,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// Package service provides EndpointController implementation
+// Package endpoint provides EndpointController implementation
 // to manage and sync service endpoints.
 package endpoint // import "k8s.io/kubernetes/pkg/controller/endpoint"