bugfix: adjust or add close request body.

affected modules:
- lease/leasehttp
- contrib/raftexample

Author: johncming

Diff for: contrib/raftexample/httpapi.go

@@ -31,6 +31,7 @@ type httpKVAPI struct {
 
 func (h *httpKVAPI) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	key := r.RequestURI
+	defer r.Body.Close()
 	switch {
 	case r.Method == "PUT":
 		v, err := ioutil.ReadAll(r.Body)

Diff for: lease/leasehttp/http.go

@@ -52,6 +52,7 @@ func (h *leaseHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	defer r.Body.Close()
 	b, err := ioutil.ReadAll(r.Body)
 	if err != nil {
 		http.Error(w, "error reading body", http.StatusBadRequest)