src/pkg/[n-z]*: gofix -r error -force=error

R=golang-dev, bsiegert, iant
CC=golang-dev
https://golang.org/cl/5294074

src/pkg/net/parse.go

diff --git a/src/pkg/net/parse.go b/src/pkg/net/parse.go
index 0d30a7a..4c4200a 100644
--- a/src/pkg/net/parse.go
+++ b/src/pkg/net/parse.go
@@ -54,7 +54,7 @@
 		if n >= 0 {
 			f.data = f.data[0 : ln+n]
 		}
-		if err == os.EOF {
+		if err == io.EOF {
 			f.atEOF = true
 		}
 	}
@@ -62,7 +62,7 @@
 	return
 }
 
-func open(name string) (*file, os.Error) {
+func open(name string) (*file, error) {
 	fd, err := os.Open(name)
 	if err != nil {
 		return nil, err