api,server: slice are already refs, no need to return ptr

api.go

@@ -535,7 +535,7 @@ func deleteImages(srv *Server, version float64, w http.ResponseWriter, r *http.R
 		return err
 	}
 	if imgs != nil {
-		if len(*imgs) != 0 {
+		if len(imgs) != 0 {
 			b, err := json.Marshal(imgs)
 			if err != nil {
 				return err

server.go

@@ -858,7 +858,7 @@ func (srv *Server) deleteImageParents(img *Image, imgs *[]APIRmi) error {
 	return nil
 }
 
-func (srv *Server) deleteImage(img *Image, repoName, tag string) (*[]APIRmi, error) {
+func (srv *Server) deleteImage(img *Image, repoName, tag string) ([]APIRmi, error) {
 	//Untag the current image
 	var imgs []APIRmi
 	tagDeleted, err := srv.runtime.repositories.Delete(repoName, tag)
@@ -871,18 +871,18 @@ func (srv *Server) deleteImage(img *Image, repoName, tag string) (*[]APIRmi, err
 	if len(srv.runtime.repositories.ByID()[img.ID]) == 0 {
 		if err := srv.deleteImageAndChildren(img.ID, &imgs); err != nil {
 			if err != ErrImageReferenced {
-				return &imgs, err
+				return imgs, err
 			}
 		} else if err := srv.deleteImageParents(img, &imgs); err != nil {
 			if err != ErrImageReferenced {
-				return &imgs, err
+				return imgs, err
 			}
 		}
 	}
-	return &imgs, nil
+	return imgs, nil
 }
 
-func (srv *Server) ImageDelete(name string, autoPrune bool) (*[]APIRmi, error) {
+func (srv *Server) ImageDelete(name string, autoPrune bool) ([]APIRmi, error) {
 	img, err := srv.runtime.repositories.LookupImage(name)
 	if err != nil {
 		return nil, fmt.Errorf("No such image: %s", name)