all: remove redundant string conversions when formatting []byte with %s

all: remove redundant string conversions when formatting []byte with %s

Change-Id: I603051a3174b139ffb81d20d42979c7f3f04a09a
Reviewed-on: https://go-review.googlesource.com/c/go/+/521136
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: shuang cui <imcusg@gmail.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>