cmd/vet: use strings.Builder

Change-Id: I583e167dac033037e82e55a9ae6c6f0c47a34c7f
Reviewed-on: https://go-review.googlesource.com/c/go/+/428293
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Tim King <taking@google.com>
Run-TryBot: Tim King <taking@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

diff --git a/src/cmd/vet/vet_test.go b/src/cmd/vet/vet_test.go
index 714ee320aee603f72975e4fd3e9d703f5825d4e8..cfe58a07c8e3724a66af579eb203192522c7e4d2 100644 (file)
--- a/src/cmd/vet/vet_test.go
+++ b/src/cmd/vet/vet_test.go
@@ -269,7 +269,7 @@ func errorCheck(outStr string, wantAuto bool, fullshort ...string) (err error) {
        if len(errs) == 1 {
                return errs[0]
        }
-       var buf bytes.Buffer
+       var buf strings.Builder
        fmt.Fprintf(&buf, "\n")
        for _, err := range errs {
                fmt.Fprintf(&buf, "%s\n", err.Error())