Merge pull request #471 in CASA/casa6 from CAS-13639 to master
* commit '03e4c46d2eebecad1212e4199b39fcff2c7a6d9b': CAS-13639 fix for another memory leak on type conversion CAS-13639 remove the comment that might be related to the fix CAS-13639 proper handling of reference count for dictionary key and values