strings: make Reader.Read use copy instead of an explicit loop.

R=r, bradfitz, r
CC=golang-dev
https://golang.org/cl/4529064

diff --git a/src/pkg/strings/reader.go b/src/pkg/strings/reader.go
index 914faa00359916b1250852712babebdbb2850e1b..4eae90e73a46c78c77a126f736b1207601468cf0 100644 (file)
--- a/src/pkg/strings/reader.go
+++ b/src/pkg/strings/reader.go
@@ -18,10 +18,7 @@ func (r *Reader) Read(b []byte) (n int, err os.Error) {
        if len(s) == 0 {
                return 0, os.EOF
        }
-       for n < len(s) && n < len(b) {
-               b[n] = s[n]
-               n++
-       }
+       n = copy(b, s)
        *r = s[n:]
        return
 }