fix: Decompilation artifact repairs for Java 11 compilation

- Duplicate variable declarations in switch-case branches (AvMenu, ServerInputStream, netData, AnimatedAction)
- Ambiguous null constructor calls requiring explicit casts (ExpireDialog, PosableShape)
- Deprecated getPeer() replaced with isDisplayable() (PolledDialog)
- Decompiler $assertionsDisabled artifact removed (BackgroundLoader)
- Missing null-safety on unboxing (BooleanFieldEditorDialog)
- Raw generic types parameterized (ShallowEnumeration)
- Raw Enumeration cast added (Shape)

1 files changed, 1 insertions, 1 deletions

diff --git a/NET/worlds/console/PolledDialog.java b/NET/worlds/console/PolledDialog.java
index 0f26bc0..0586ddd 100644
--- a/NET/worlds/console/PolledDialog.java
+++ b/NET/worlds/console/PolledDialog.java
@@ -124,7 +124,7 @@ public abstract class PolledDialog extends Dialog implements MainCallback, Dialo
          if (this.toBeDisposed) {
             this.setVisible(false);
             this.parent.requestFocus();
-            if (this.getPeer() != null) {
+            if (this.isDisplayable()) {
                this.dispose();
             }