DVPL-4568: service.Server.CreateMessageAsync() throw "Object reference not set to an instance of an object."
DVPL-4568: service.Server.CreateMessageAsync() throw "Object reference not set to an instance of an object."

Regression fixed.

muratoflu/splunk-sdk-csharp-pcl,splunk/splunk-sdk-csharp-pcl,muratoflu/splunk-sdk-csharp-pcl