crypto/cipher: fix vet warning

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/7973043

diff --git a/src/pkg/crypto/cipher/example_test.go b/src/pkg/crypto/cipher/example_test.go
index e0027cac23b145e523566fde4d5efb30e4d92ed3..373f6791be4ab9d52e5240b351aeccafd5139183 100644 (file)
--- a/src/pkg/crypto/cipher/example_test.go
+++ b/src/pkg/crypto/cipher/example_test.go
@@ -233,7 +233,7 @@ func ExampleStreamReader() {
        }
        defer outFile.Close()
 
-       reader := &cipher.StreamReader{stream, inFile}
+       reader := &cipher.StreamReader{S: stream, R: inFile}
        // Copy the input file to the output file, decrypting as we go.
        if _, err := io.Copy(outFile, reader); err != nil {
                panic(err)
@@ -270,7 +270,7 @@ func ExampleStreamWriter() {
        }
        defer outFile.Close()
 
-       writer := &cipher.StreamWriter{stream, outFile, nil}
+       writer := &cipher.StreamWriter{S: stream, W: outFile}
        // Copy the input file to the output file, encrypting as we go.
        if _, err := io.Copy(writer, inFile); err != nil {
                panic(err)