Can't seem to pull timestamp from networkmessageinfo in OnSerializeNetworkView

So, I am trying to read the metworkmessageinfo timestamp into a class variable, and I am getting:

NullReferenceException: Object reference not set to an instance of an object
netMove.OnSerializeNetworkView (UnityEngine.BitStream infoStream, NetworkMessageInfo infoSender)

relevant code:

class objectState {
   var timeStamp: double; //EDIT: changed from float to double for T-shoot, same error
   var savedPos: Vector3;
   var savedRot: Quaternion;
}
function OnSerializeNetworkView ( infoStream: BitStream, infoSender: NetworkMessageInfo ) {
   if ( infoStream.isWriting ) {
      //input code is here, stripped for relevance
   } else {
      //other lerp code here, stripped for relevance
      var currentState: objectState;
      currentState.timeStamp = infoSender.timestamp; //nullref here
   }
}

Bah, answering my own question.
I was converting a C# sample and the sample didn’t have a constructor in the class. This worked:

class objectState {
   var timeStamp: double; 
   var savedPos: Vector3;
   var savedRot: Quaternion;
   function objectState () { //added constructor function
		this.timeStamp = 0.0D;
		this.savedPos = Vector3.zero;
		this.savedRot = Quaternion.identity;
   }
}
function OnSerializeNetworkView ( infoStream: BitStream, infoSender: NetworkMessageInfo ) {
   if ( infoStream.isWriting ) {
      //input code is here, stripped for relevance
   } else {
      //other lerp code here, stripped for relevance
      var currentState: objectState = new objectState();   //added parens
      currentState.timeStamp = infoSender.timestamp; 
   }
}