2.5.3版本reference注解调用抛空指针异常

[wallacepang]

环境：2.5.3
异常：
A服务通过reference注解引用B，A启动的时候B服务宕机，后面重启B服务
A服务调用B的时候抛NullPointException
正常：
后面重启A服务，调用B服务才正常

[luyuanwan]

You can give the stack trace.

[diecui1202]

@wallacepang could you please try out the lastest version 2.6.2?

Feel free to reopen it if you also get problem.

[wallacepang]

@diecui1202 2.6.2 也是这个问题，@reference 默认 check=true, 把check改成false ,服务B能正常调用

[diecui1202]

@wallacepang can you provide the stack trace?

[ATAKing1023]

I opened a pull request for this issue. #1999
@ralf0131 can you please review the change? It's a minor fix.

[ATAKing1023]

Here is another reported issue with stacktrace. #1765
@diecui1202

[zonghaishang]

merged, see: #1999