NPE fix

org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/i18n/I18nBase.java

@@ -5,6 +5,11 @@ import java.util.Locale;
 import java.util.Objects;
 import java.util.ResourceBundle;
 
+
+/**
+ * Handles the locale, ResourceBundle and String formatting for i18n
+ * This abstract class should be extended when implementing a IWorkerContext Interface.
+ */
 public abstract class I18nBase {
 
 

org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java

@@ -333,8 +333,6 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
     }
 
   }
-
-  private IWorkerContext context;
   private FHIRPathEngine fpe;
 
   // configuration items