8043456: KSS: javax.swing.plaf.basic.BasicInternalFrameTitlePane#postClosingEvent

Reviewed-by: alexsch, serb

src/share/classes/javax/swing/plaf/basic/BasicInternalFrameTitlePane.java

@@ -379,16 +379,12 @@ public class BasicInternalFrameTitlePane extends JComponent
         InternalFrameEvent e = new InternalFrameEvent(
             frame, InternalFrameEvent.INTERNAL_FRAME_CLOSING);
         // Try posting event, unless there's a SecurityManager.
-        if (JInternalFrame.class.getClassLoader() == null) {
         try {
             Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(e);
-                return;
         } catch (SecurityException se) {
-                // Use dispatchEvent instead.
-            }
-        }
             frame.dispatchEvent(e);
         }
+    }
 
 
     protected void enableActions() {