ModuleKerbalTracker: Gracefully refuse to add resources when the subject resource doesn't exist yet.
ModuleKerbalTracker: Gracefully refuse to add resources when the subject resource doesn't exist yet.

--- a/ModuleKerbalMassTracker.cs
+++ b/ModuleKerbalMassTracker.cs
@@ -75,7 +75,7 @@
 
 			Tools.PostDebugMessage(this, "hasResource: {0}", hasResource);
 
-			if (!hasResource)
+			if (!hasResource && this.kerbalMassInfo != null)
 			{
 				Tools.PostDebugMessage(this, "Adding resource to part");