fix SessionRegenerateID should release old SessionStore and release new SessionStore in router.go

@@ -165,7 +165,7 @@ func (c *Controller) RenderBytes() ([]byte, error) {
 
 		if c.LayoutSections != nil {
 			for sectionName, sectionTpl := range c.LayoutSections {
-				if (sectionTpl == "") {
+				if sectionTpl == "" {
 					c.Data[sectionName] = ""
 					continue
 				}
@@ -391,6 +391,7 @@ func (c *Controller) DelSession(name interface{}) {
 // SessionRegenerateID regenerates session id for this session.
 // the session data have no changes.
 func (c *Controller) SessionRegenerateID() {
+	c.CruSession.SessionRelease(c.Ctx.ResponseWriter)
 	c.CruSession = GlobalSessions.SessionRegenerateId(c.Ctx.ResponseWriter, c.Ctx.Request)
 	c.Ctx.Input.CruSession = c.CruSession
 }

@@ -529,7 +529,9 @@ func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request)
 	// session init
 	if SessionOn {
 		context.Input.CruSession = GlobalSessions.SessionStart(w, r)
-		defer context.Input.CruSession.SessionRelease(w)
+		defer func() {
+			context.Input.CruSession.SessionRelease(w)
+		}()
 	}
 
 	if !utils.InSlice(strings.ToLower(r.Method), HTTPMETHOD) {