go/scanner: don't print garbage if there's no error

R=r
CC=golang-dev
https://golang.org/cl/6489059

diff --git a/src/pkg/go/scanner/errors.go b/src/pkg/go/scanner/errors.go
index 8a75a96508e86bb224fe5e40fd8ce3a83c50d0eb..22de69c3c1c824a7d773b4fdfe700fa43172da08 100644 (file)
--- a/src/pkg/go/scanner/errors.go
+++ b/src/pkg/go/scanner/errors.go
@@ -120,7 +120,7 @@ func PrintError(w io.Writer, err error) {
                for _, e := range list {
                        fmt.Fprintf(w, "%s\n", e)
                }
-       } else {
+       } else if err != nil {
                fmt.Fprintf(w, "%s\n", err)
        }
 }