Update DialogCloser.java

Implements sleep bypass (screen dialog close only) for intervals of zero or less.

vassal-app/src/main/java/VASSAL/tools/swing/DialogCloser.java

@@ -1,6 +1,6 @@
 /*
  *
- * Copyright (c) 2008-2023 by The VASSAL Development Team
+ * Copyright (c) 2008-2024 by The VASSAL Development Team
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ -29,15 +29,16 @@ public class DialogCloser implements Runnable {
 
   public DialogCloser(JDialog dialog, int ms) {
     this.dialog = dialog;
-    this.ms = ms < 0 ? 500 : ms;
+    this.ms = ms;
   }
 
   @Override
   public void run() {
-    if (ms > 1) { // Zero means no sleep - refresh only
+    if (ms > 0) {
       try {
         Thread.sleep(ms);
-      } catch (InterruptedException e) {
+      }
+      catch (InterruptedException e) {
         throw new RuntimeException(e);
       }
     }