DefaultScriptInterpreter: add final keywords

Author: ctrueden

src/main/java/org/scijava/script/DefaultScriptInterpreter.java

@@ -42,8 +42,8 @@
  */
 public class DefaultScriptInterpreter implements ScriptInterpreter {
 
-	private ScriptEngine engine;
-	private History history;
+	private final ScriptEngine engine;
+	private final History history;
 	private String currentCommand = "";
 
 	/**
@@ -52,7 +52,9 @@ public class DefaultScriptInterpreter implements ScriptInterpreter {
 	 * @param scriptService the script service
 	 * @param engine the script engine
 	 */
-	public DefaultScriptInterpreter(final PrefService prefs, final ScriptService scriptService, final ScriptEngine engine) {
+	public DefaultScriptInterpreter(final PrefService prefs,
+		final ScriptService scriptService, final ScriptEngine engine)
+	{
 		this.engine = engine;
 		history = new History(prefs, engine.getClass().getName());
 		readHistory();