[fixed] user mails bugs

src/views/user/User.vue

@@ -173,7 +173,11 @@
             >
               <div class="pictrue">
                 <span
-                  v-if="item.name == '我的消息' && userInfo.mails.unread > 0"
+                  v-if="
+                    item.name == '我的消息' &&
+                      userInfo.mails &&
+                      userInfo.mails.unread > 0
+                  "
                   class="order-status-num"
                   >{{ userInfo.mails.unread }}</span
                 >