code review by fei.hong: modify getnamed funciton

@@ -812,8 +812,8 @@ class CouponController extends HuodongAction
             }
 
             /* 判断用户是否登录 */
-//            $uid = $this->getSession(self::SESSION_UID);
-//            if (!$uid) {
+            $uid = $this->getSession(self::SESSION_UID);
+            if (!$uid) {
                 $uid = $this->getUid();
                 if (!$uid) {
                     $result['code'] = 400;
@@ -821,7 +821,7 @@ class CouponController extends HuodongAction
                     $result['data'] = Helpers::url('/signin.html', array('refer' => $this->server('HTTP_REFERER', '/')), 'default');
                     break;
                 }
-//            }
+            }
 
             /* 领取指定的优惠券操作 */
             $result = ActivityData::getCouponNamed($uid, $activityId, $couponId);