debug bind user function

go/gopath/src/fohow.com/apps/controllers/user_controller/user_controller.go

@@ -449,6 +449,9 @@ func (self *UserController) SysUserBind() {
 	remark := self.GetString("remark")
 
 	useCache, _ := self.GetBool("cache", false)
+	if len(userNo) <= 0 {
+		self.ReturnError(403, apps.ParamsError, "", nil)
+	}
 	//wxUser := self.GetCurrentWxUser(useCache)
 	// if inviteWxId == 0 {
 	// 	self.ReturnError(403, apps.NoExist, "", nil)