net/http: use Header.clone rather then duplicating functionality

cloneHeader duplicates what Header.clone() method is doing. It's
used in a single place, which can be replaced with the use of the
method.

Change-Id: I6e8bbd6c95063f31ca3695f13fa7478873230525
GitHub-Last-Rev: eb08aeae9b4257df5cf08d6d30903ddeec6b6242
GitHub-Pull-Request: golang/go#27817
Reviewed-on: https://go-review.googlesource.com/136762
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

1 files changed, 0 insertions, 10 deletions

diff --git a/src/net/http/header.go b/src/net/http/header.go
index b28144d8c1..2aa9d6254b 100644
--- a/src/net/http/header.go
+++ b/src/net/http/header.go
@@ -229,13 +229,3 @@ func hasToken(v, token string) bool {
 func isTokenBoundary(b byte) bool {
 	return b == ' ' || b == ',' || b == '\t'
 }
-
-func cloneHeader(h Header) Header {
-	h2 := make(Header, len(h))
-	for k, vv := range h {
-		vv2 := make([]string, len(vv))
-		copy(vv2, vv)
-		h2[k] = vv2
-	}
-	return h2
-}