Note the static code analysis warning changes

Author: cjbj

CHANGELOG.md

@@ -22,6 +22,8 @@
 - Fixed various execution failures with Node.js 13.2 due to Node.js NULL pointer behavior change ([ODPI-C
   change](https://github.com/oracle/odpi/commit/7693865bb6a98568546aa319cc0fdb9e208cf9d4)).
 
+- Fixed some static code analysis warnings.
+
 ## node-oracledb v4.1.0 (26 Nov 2019)
 
 - Added end-to-end tracing attributes