Avoid an error in getValueFromIMNode() in INTER-Mediator-Lib.js if the parameter is null
Modify INTER-Mediator-Lib-test.js
Merge pull request #105 from msyk/avoid-an-error-in-getvaluefromimnode

Avoid an error in getValueFromIMNode() in INTER-Mediator-Lib.js if the parameter is null