crypto: use fmt.Appendf

Change-Id: I022a221e2d73cd8c70e8e04b7046c388748646a5
Reviewed-on: https://go-review.googlesource.com/c/go/+/435696
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>

diff --git a/src/crypto/tls/common.go b/src/crypto/tls/common.go
index 7d686fd088c0fc2452e0ede252eea573c97c32c3..f860ac9dfbdc0318a93dceecb5f81b64684bd824 100644 (file)
--- a/src/crypto/tls/common.go
+++ b/src/crypto/tls/common.go
@@ -1338,7 +1338,7 @@ func (c *Config) writeKeyLog(label string, clientRandom, secret []byte) error {
                return nil
        }
 
-       logLine := []byte(fmt.Sprintf("%s %x %x\n", label, clientRandom, secret))
+       logLine := fmt.Appendf(nil, "%s %x %x\n", label, clientRandom, secret)
 
        writerMutex.Lock()
        _, err := c.KeyLogWriter.Write(logLine)