code review 5294074: src/pkg/[n-z]*: gofix -r error

src/pkg/testing/iotest/logger.go

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package iotest
 
 import (
         "io"
         "log"
-        "os"
 )
 
 type writeLogger struct {
         prefix string
         w      io.Writer
 }
 
-func (l *writeLogger) Write(p []byte) (n int, err os.Error) {
+func (l *writeLogger) Write(p []byte) (n int, err error) {
         n, err = l.w.Write(p)
         if err != nil {
                 log.Printf("%s %x: %v", l.prefix, p[0:n], err)
         } else {
                 log.Printf("%s %x", l.prefix, p[0:n])
         }
         return
 }
 
 // NewWriteLogger returns a writer that behaves like w except
 // that it logs (using log.Printf) each write to standard error,
 // printing the prefix and the hexadecimal data written.
 func NewWriteLogger(prefix string, w io.Writer) io.Writer {
         return &writeLogger{prefix, w}
 }
 
 type readLogger struct {
         prefix string
         r      io.Reader
 }
 
-func (l *readLogger) Read(p []byte) (n int, err os.Error) {
+func (l *readLogger) Read(p []byte) (n int, err error) {
         n, err = l.r.Read(p)
         if err != nil {
                 log.Printf("%s %x: %v", l.prefix, p[0:n], err)
         } else {
                 log.Printf("%s %x", l.prefix, p[0:n])
         }
         return
 }
 
 // NewReadLogger returns a reader that behaves like r except
 // that it logs (using log.Print) each read to standard error,
 // printing the prefix and the hexadecimal data written.
 func NewReadLogger(prefix string, r io.Reader) io.Reader {
         return &readLogger{prefix, r}
 }