xiaomj

Results 3 issues of xiaomj

compile error: comparison of address of 'mongo_conn->conn.connected' not equal to a null pointer is always true change line 909 etc... to such as if(mongo_conn->conn.connected)... fixed!

![image](https://user-images.githubusercontent.com/4464211/34155573-db548992-e4f4-11e7-9110-1cefe63fe63e.png)