image/gif: minor fixes.

R=r
CC=golang-dev
https://golang.org/cl/4523054

diff --git a/src/pkg/image/gif/reader.go b/src/pkg/image/gif/reader.go
index d37f52689eec75325ddb56894d84518ca08e9f07..e083b871008396a19cb769f1933f24ba78a9d306 100644 (file)
--- a/src/pkg/image/gif/reader.go
+++ b/src/pkg/image/gif/reader.go
@@ -141,8 +141,6 @@ func (d *decoder) decode(r io.Reader, configOnly bool) os.Error {
                }
        }
 
-       d.image = nil
-
 Loop:
        for err == nil {
                var c byte
@@ -383,8 +381,7 @@ func DecodeConfig(r io.Reader) (image.Config, os.Error) {
        if err := d.decode(r, true); err != nil {
                return image.Config{}, err
        }
-       colorMap := d.globalColorMap
-       return image.Config{colorMap, d.width, d.height}, nil
+       return image.Config{d.globalColorMap, d.width, d.height}, nil
 }
 
 func init() {