[GitHub] [incubator-skywalking] zhaoyuguang opened a new pull request #2450: Fix RabbitMq NPE case

[GitBox]

zhaoyuguang opened a new pull request #2450: Fix RabbitMq NPE case
URL: https://github.com/apache/incubator-skywalking/pull/2450
 
 
   Please answer these questions before submitting pull request
   
   - Why submit this pull request?
   - [x] Bug fix
   - [ ] New feature provided
   - [ ] Improve performance
   
   - Related issues
   https://github.com/apache/incubator-skywalking/issues/2446
   ___
   ### Bug fix
   - When no header mq, the AMQP.BasicProperties is null.
   
![QQ20190405-080941](https://user-images.githubusercontent.com/10150229/55597005-0c938100-577e-11e9-8586-e1b3b74621b4.jpg)
   
   env
   RabbitMq 3.7.14
   amqp-client 5.20
   
   - How to fix?
   Add the null? Judgment code.
   
   @withlin Please see~~

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