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/scape/BackgroundLoader.java b/NET/worlds/scape/BackgroundLoader.java
index 8f337a0..576570a 100644
--- a/NET/worlds/scape/BackgroundLoader.java
+++ b/NET/worlds/scape/BackgroundLoader.java
@@ -46,7 +46,7 @@ public class BackgroundLoader implements MainCallback, Runnable {
 
    @Override
    public void run() {
-      if ($assertionsDisabled || Thread.currentThread() == this.asyncLoaderThread) {
+      if (Thread.currentThread() == this.asyncLoaderThread) {
          while (true) {
             BackgroundLoaderElement ele = this.asyncLoadQueue.getItem();
             ele.asyncLoad();